diff --git a/TODO.org b/TODO.org
index 442b381..7e98681 100644
--- a/TODO.org
+++ b/TODO.org
@@ -1,17 +1,25 @@
 * TODO
 ** Features
-- [ ] search
-- [ ] upvote/downvote posts
-- [ ] upvote/downvote comments
+- [X] upvote/downvote posts
+- [X] upvote/downvote comments
+- [ ] upvote/downvote current post in dank-mode-comments
+- [ ] browse url of current post in dank-mode-comments
 - [ ] reply comments
+- [ ] mouse interaction
+  - [ ] open post comments
+  - [ ] open post link
+  - [ ] upvote/downvote post
+  - [ ] upvote/downvote comment
+  - [ ] fold comment
+- [ ] search
 ** Enhancements
 ** Bug fixes
 - [ ] Switching subreddits in dank-mode-comments mode is not available
 
 * Ideas
 
-- Use plstore.el for oauth tokens
-- Use web-server.el to do the oauth dance
+- [X] Use plstore.el for oauth tokens
+- [X] Use web-server.el to do the oauth dance
   http://eschulte.github.io/emacs-web-server
 
 * Known bugs
diff --git a/lisp/dank-mode-backend.el b/lisp/dank-mode-backend.el
index 70d5469..7a4719f 100644
--- a/lisp/dank-mode-backend.el
+++ b/lisp/dank-mode-backend.el
@@ -8,7 +8,7 @@
 
 ;;; Commentary:
 
-;; This file defines functions for making requests to Reddit.
+;; This file defines wrapper functions for making requests to Reddit.
 
 ;;; Code:
 
@@ -151,6 +151,13 @@ REQUEST-PARAMS is plist of request parameters that Reddit's 'subreddits' API tak
          (resp (dank-mode-backend-request "GET" url params)))
     (plist-get (plist-get resp :data) :children)))
 
+(defun dank-mode-backend-vote (thing-id direction)
+  "Cast a vote on THING-ID with DIRECTION (1, 0 or -1)."
+  (let* ((url "/api/vote")
+         (resp (dank-mode-backend-request "POST" url `((id . ,thing-id) (dir . ,direction)))))
+    resp))
+
+
 (provide 'dank-mode-backend)
 
 ;;; dank-mode-backend.el ends here
diff --git a/lisp/dank-mode-comment.el b/lisp/dank-mode-comment.el
index ffce7d0..0288ba0 100644
--- a/lisp/dank-mode-comment.el
+++ b/lisp/dank-mode-comment.el
@@ -16,11 +16,22 @@
 (require 'dank-mode-backend)
 (require 'dank-mode-utils)
 (require 'dank-mode-post)
+(require 'dank-mode-faces)
+
+(defcustom dank-mode-comment-upvote-symbol "🡅"
+  "Symbol to use for upvotes. Change this if the emoji doesn't work correctly."
+  :type 'string
+  :group 'dank-mode)
+
+(defcustom dank-mode-comment-downvote-symbol "🡇"
+  "Symbol to use for downvotes. Change this if the emoji doesn't work correctly."
+  :type 'string
+  :group 'dank-mode)
 
 (cl-defstruct dank-mode-comment
   name id body edited text age date author subreddit score
   author_flair gilded replies depth parent_id post_author_p
-  type more_count children_ids)
+  type more_count children_ids likes)
 
 (defcustom dank-mode-comments-body-fill-width 120
   "Fill width for rendering the comment body."
@@ -28,7 +39,7 @@
   :group 'dank-mode)
 
 (defvar dank-mode-comment-metadata-template
-  "- ${author} (${score} points | ${age})${edited} ")
+  "- ${author} (${vote}${score} points | ${age})${edited} ")
 
 (defvar dank-mode-comment-more-template
   "+ [${count} more comments]")
@@ -72,7 +83,8 @@ list of children, also parsed."
                              :author_flair (plist-get comment :author_flair_text)
                              :gilded (plist-get comment :gilded)
                              :parent_id (plist-get comment :parent_id)
-                             :post_author_p (string-equal (plist-get comment :author) post-author))))
+                             :post_author_p (string-equal (plist-get comment :author) post-author)
+                             :likes (plist-get comment :likes))))
         (if (stringp replies)
             parsed-comment
           `(,parsed-comment . (,(mapcar (lambda (c) (dank-mode-comment-parse c post-author)) children))))))))
@@ -85,11 +97,18 @@ formatting/indentation will depend on its position."
   (let* ((author-face (if (dank-mode-comment-post_author_p comment) 'dank-mode-faces-comment-author-op 'dank-mode-faces-comment-author))
          (author (concat "/u/" (dank-mode-comment-author comment)))
          (score (number-to-string (dank-mode-comment-score comment)))
+         (likes (dank-mode-comment-likes comment))
+         (vote (format "%s" (cond ((eq :false likes) dank-mode-comment-downvote-symbol)
+                                  (likes dank-mode-comment-upvote-symbol)  ; likes is t if upvoted
+                                  (t ""))))
+         (vote-face (format "%s" (cond ((eq :false likes) 'dank-mode-faces-downvote)
+                                       (likes 'dank-mode-faces-upvote)  ; likes is t if upvoted
+                                       (t 'dank-mode-faces-comment-metadata))))
          (age (dank-mode-comment-age comment))
          (edited (or nil ""))
          (gilded (number-to-string (dank-mode-comment-gilded comment)))
          (depth (dank-mode-comment-depth comment))
-         (format-context `(author (,author . ,author-face) age ,age score ,score edited ,edited gilded ,gilded depth ,depth))
+         (format-context `(author (,author . ,author-face) age ,age vote (,vote . ,vote-face) score (,score . ,vote-face) edited ,edited gilded ,gilded depth ,depth))
          (formatted-metadata (dank-mode-utils-format-plist dank-mode-comment-metadata-template format-context 'dank-mode-faces-comment-metadata))
          (formatted-metadata (concat (make-string (* 2 depth) ?\s) formatted-metadata)))
     formatted-metadata))
diff --git a/lisp/dank-mode-comments.el b/lisp/dank-mode-comments.el
index a0caa49..12b190e 100644
--- a/lisp/dank-mode-comments.el
+++ b/lisp/dank-mode-comments.el
@@ -59,6 +59,8 @@
     (define-key map (kbd "C-x l o") 'dank-mode-comments-browse-post-link)
     (define-key map (kbd "C-x l o") 'dank-mode-comments-browse-post-comments)
     (define-key map (kbd "TAB") 'dank-mode-comments-toggle-comment-tree-fold-at-point)
+    (define-key map (kbd "C-x v u") (lambda (point) (interactive "d") (dank-mode-comments-vote-comment-at-point point 1)))
+    (define-key map (kbd "C-x v d") (lambda (point) (interactive "d") (dank-mode-comments-vote-comment-at-point point -1)))
     (define-key map (kbd "C-x q") 'dank-mode-comments-kill-current-buffer)
     map))
 
@@ -438,5 +440,28 @@ If EWW is non-nil, browse in eww instead of the browser."
   (let ((browse-url-browser-function (if eww 'eww-browse-url 'browse-url-default-browser)))
     (browse-url (concat (dank-mode-utils-reddit-url) dank-mode-comments-current-permalink))))
 
+(defun dank-mode-comments-vote-comment-at-point (pos direction)
+  "Vote the comment at POS with DIRECTION.
+Sets the comment's `likes' field appropriately."
+  (interactive "d")
+  (let* ((ewoc-node (ewoc-locate dank-mode-comments-current-ewoc pos))
+         (comment-data (dank-mode-utils-ewoc-data dank-mode-comments-current-ewoc pos))
+         (comment-id (dank-mode-comment-id comment-data))
+         (comment-current-likes (dank-mode-comment-likes comment-data))
+         (comment-current-score (dank-mode-comment-score comment-data))
+         ; negate direction (set to 0) if comment is already voted towards the same direction
+         (dir (cond ((and (eq :false comment-current-likes) (= -1 direction)) 0)
+                    ((and comment-current-likes (= 1 direction)) 0)
+                    (t direction)))
+         (new-likes (cond ((= -1 dir) :false)
+                          ((= 1 dir) t)
+                          ((= 0 dir) nil)
+                          (t nil))))
+    (dank-mode-backend-vote (concat "t1_" comment-id) dir)
+    (setf (dank-mode-comment-likes comment-data) new-likes)
+    (setf (dank-mode-comment-score comment-data) (+ comment-current-score dir))
+    (ewoc-set-data ewoc-node comment-data)
+    (ewoc-invalidate dank-mode-comments-current-ewoc ewoc-node)))
+
 (provide 'dank-mode-comments)
 ;;; dank-mode-comments.el ends here
diff --git a/lisp/dank-mode-faces.el b/lisp/dank-mode-faces.el
index 916fa75..3c786ea 100644
--- a/lisp/dank-mode-faces.el
+++ b/lisp/dank-mode-faces.el
@@ -22,15 +22,20 @@
   :group 'dank-mode-faces)
 
 (defface dank-mode-faces-upvote
-  `((t :foreground ,dank-mode-faces-color-upvote))
+  `((t :foreground ,dank-mode-faces-color-upvote :weight bold))
   "Face for upvotes."
   :group 'dank-mode-faces)
 
 (defface dank-mode-faces-downvote
-  `((t :foreground ,dank-mode-faces-color-downvote))
+  `((t :foreground ,dank-mode-faces-color-downvote :weight bold))
   "Face for downvotes."
   :group 'dank-mode-faces)
 
+(defface dank-mode-faces-score
+  `((t :foreground ,dank-mode-faces-color-upvote))
+  "Face for score points."
+  :group 'dank-mode-faces)
+
 (defface dank-mode-faces-post-title
   '((t :inherit default :weight bold))
   "Face for post titles."
diff --git a/lisp/dank-mode-oauth.el b/lisp/dank-mode-oauth.el
index ca8dbf1..d887c34 100644
--- a/lisp/dank-mode-oauth.el
+++ b/lisp/dank-mode-oauth.el
@@ -64,7 +64,7 @@ to be refreshed."
 (defvar dank-mode-oauth-redirect-server nil)
 (defvar dank-mode-oauth-auth-url "https://www.reddit.com/api/v1/authorize")
 (defvar dank-mode-oauth-token-url "https://www.reddit.com/api/v1/access_token")
-(defvar dank-mode-oauth-scope "identity history mysubreddits read wikiread")
+(defvar dank-mode-oauth-scope "identity history mysubreddits read wikiread vote edit save submit subscribe report")
 (defvar dank-mode-oauth-redirect-url (concat "http://localhost:" (number-to-string dank-mode-oauth-redirect-port) dank-mode-oauth-redirect-path))
 
 (defun dank-mode-oauth--random-string (n)
diff --git a/lisp/dank-mode-post.el b/lisp/dank-mode-post.el
index 7c097b1..bc7fc6c 100644
--- a/lisp/dank-mode-post.el
+++ b/lisp/dank-mode-post.el
@@ -16,11 +16,21 @@
 (require 'dank-mode-utils)
 (require 'dank-mode-faces)
 
+(defcustom dank-mode-post-upvote-symbol "🡅"
+  "Symbol to use for upvotes. Change this if the emoji doesn't work correctly."
+  :type 'string
+  :group 'dank-mode)
+
+(defcustom dank-mode-post-downvote-symbol "🡇"
+  "Symbol to use for downvotes. Change this if the emoji doesn't work correctly."
+  :type 'string
+  :group 'dank-mode)
+
 (cl-defstruct dank-mode-post
   "Struct for a Reddit post."
   name id title link permalink text age date author subreddit score num_comments
   domain post_type nsfw spoiler link_flair author_flair
-  gilded stickied locked)
+  gilded stickied locked likes)
 
 (cl-defstruct dank-subreddit
   "Struct for a subreddit."
@@ -29,7 +39,7 @@
 ;; Rendering
 
 (defvar dank-mode-post-template
-  "${title}\n    | ${score} points | ${num_comments} comments | ${link_flair}${nsfw}${spoiler}${post_type}${domain}\n    | ${subreddit} submitted by ${author}${author_flair} ${age}")
+  "${title}\n    | ${vote}${score} points | ${num_comments} comments | ${link_flair}${nsfw}${spoiler}${post_type}${domain}\n    | ${subreddit} submitted by ${author}${author_flair} ${age}")
 
 (defun dank-mode-post-format (post)
   "Format POST as string using `dank-mode-post-template'.
@@ -42,6 +52,13 @@ Also applies font-lock properties."
                          ""))
          (subreddit (concat "/r/" (dank-mode-post-subreddit post)))
          (score (format "%s" (dank-mode-post-score post)))
+         (likes (dank-mode-post-likes post))
+         (vote (format "%s" (cond ((eq :false likes) dank-mode-post-downvote-symbol)
+                                  (likes dank-mode-post-upvote-symbol)  ; likes is t if upvoted
+                                  (t ""))))
+         (vote-face (format "%s" (cond ((eq :false likes) 'dank-mode-faces-downvote)
+                                       (likes 'dank-mode-faces-upvote)  ; likes is t if upvoted
+                                       (t 'dank-mode-faces-upvote))))
          (num_comments (format "%s" (dank-mode-post-num_comments post)))
          (nsfw (if (dank-mode-post-nsfw post) "NSFW " ""))
          (spoiler (if (dank-mode-post-spoiler post) "SPOILERS " ""))
@@ -51,7 +68,7 @@ Also applies font-lock properties."
          (link_flair (if (dank-mode-post-link_flair post)
                          (concat "[" (dank-mode-post-link_flair post) "] ") ""))
          (format-context `(title (,title . dank-mode-faces-post-title) age (,age . dank-mode-faces-age) author (,author . dank-mode-faces-post-author) author_flair (,author_flair . dank-mode-faces-flair)
-                                 subreddit (,subreddit . dank-mode-faces-subreddit) score (,score . dank-mode-faces-upvote) num_comments (,num_comments . dank-mode-faces-downvote)
+                                 subreddit (,subreddit . dank-mode-faces-subreddit) vote (,vote . ,vote-face) score (,score . dank-mode-faces-upvote) num_comments (,num_comments . dank-mode-faces-downvote)
                                  nsfw (,nsfw . dank-mode-faces-nsfw) spoiler (,spoiler . dank-mode-faces-nsfw) domain (,domain . dank-mode-faces-site-domain) post_type (,post_type . dank-mode-faces-post-type)
                                  link_flair (,link_flair . dank-mode-faces-flair)))
          (formatted-post (dank-mode-utils-format-plist dank-mode-post-template format-context)))
@@ -67,6 +84,7 @@ Also applies font-lock properties."
                          :text (plist-get post :selftext)
                          :age (dank-mode-utils-timestamp-ago (plist-get post :created_utc))
                          :date (plist-get post :created_utc)
+                         :likes (plist-get post :likes)
                          :score (plist-get post :score)
                          :author (plist-get post :author)
                          :subreddit (plist-get post :subreddit)
diff --git a/lisp/dank-mode-posts.el b/lisp/dank-mode-posts.el
index 4eeebce..726a6db 100644
--- a/lisp/dank-mode-posts.el
+++ b/lisp/dank-mode-posts.el
@@ -73,6 +73,8 @@ When nil, defaults to the frontpage."
     (define-key map (kbd "C-x l l") (lambda (point) (interactive "d") (dank-mode-posts-browse-post-link-at-point point t)))
     (define-key map (kbd "C-x l b") 'dank-mode-posts-browse-post-link-at-point)
     (define-key map (kbd "C-x l o") 'dank-mode-posts-browse-post-comments-at-point)
+    (define-key map (kbd "C-x v u") (lambda (point) (interactive "d") (dank-mode-posts-vote-post-at-point point 1)))
+    (define-key map (kbd "C-x v d") (lambda (point) (interactive "d") (dank-mode-posts-vote-post-at-point point -1)))
     (define-key map (kbd "C-x q") 'kill-current-buffer)
     map))
 
@@ -164,17 +166,6 @@ REFRESH-EWOC creates a new ewoc."
   "Populate the EWOC with POSTS."
   (mapc (lambda (p) (ewoc-enter-last ewoc p)) posts))
 
-(defun dank-mode-posts-append-post-to-buffer (buf post-index post)
-  "Append POST into BUF.
-POST-INDEX is the number (\"position\") of the post."
-  (when (buffer-live-p buf)
-    (with-current-buffer buf
-      (let* ((inhibit-read-only t)
-             (formatted-post (concat (dank-mode-post-format post post-index) "\n")))
-        (save-excursion
-          (goto-char (point-max))
-          (insert formatted-post))))))
-
 (defun dank-mode-posts-render-error (err)
   "Render contents of ERR into the current buffer."
   (let ((inhibit-read-only t))
@@ -338,6 +329,33 @@ If EWW is non-nil, browse in eww instead of the browser."
         (browse-url-browser-function (if eww 'eww-browse-url 'browse-url-default-browser)))
     (browse-url (concat (dank-mode-utils-reddit-url) post-permalink))))
 
+(defun dank-mode-posts-vote-post-at-point (pos direction)
+  "Vote the post at POS with DIRECTION.
+Sets the post's `likes' field appropriately."
+  (interactive "d")
+  (let* ((ewoc-node (ewoc-locate dank-mode-posts-current-ewoc pos))
+         (post-data (dank-mode-utils-ewoc-data dank-mode-posts-current-ewoc pos))
+         (post-id (dank-mode-post-id post-data))
+         (post-current-likes (dank-mode-post-likes post-data))
+         (post-current-score (dank-mode-post-score post-data))
+         ; negate direction (set to 0) if post is already voted towards the same direction
+         (dir (cond ((and (eq :false post-current-likes) (= -1 direction)) 0)
+                    ((and post-current-likes (= 1 direction)) 0)
+                    (t direction)))
+         (new-likes (cond ((= -1 dir) :false)
+                          ((= 1 dir) t)
+                          ((= 0 dir) nil)
+                          (t nil))))
+    (dank-mode-backend-vote (concat "t3_" post-id) dir)
+    (setf (dank-mode-post-likes post-data) new-likes)
+    (setf (dank-mode-post-score post-data) (+ post-current-score dir))
+    (ewoc-set-data ewoc-node post-data)
+    (ewoc-invalidate dank-mode-posts-current-ewoc ewoc-node)))
+
+(defun dank-mode-posts--print-ewoc-data-at-point (pos)
+  (interactive "d")
+  (message "%s" (dank-mode-utils-ewoc-data dank-mode-posts-current-ewoc pos)))
+
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; interaction functions ;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;