diff --git a/nyaa/forms.py b/nyaa/forms.py
index 1fec2ee..f6e35a8 100644
--- a/nyaa/forms.py
+++ b/nyaa/forms.py
@@ -129,7 +129,7 @@ class DisabledSelectField(SelectField):
 class CommentForm(FlaskForm):
     comment = TextAreaField('Make a comment', [
         Length(max=255, message='Comment must be at most %(max)d characters long.'),
-        Required()
+        DataRequired()
     ])
 
     is_anonymous = BooleanField('Anonymous')
diff --git a/nyaa/models.py b/nyaa/models.py
index a048edd..2f6d730 100644
--- a/nyaa/models.py
+++ b/nyaa/models.py
@@ -392,6 +392,15 @@ class User(db.Model):
         ]
         return all(checks)
 
+    def gravatar_url(self):
+        # from http://en.gravatar.com/site/implement/images/python/
+        size = 40
+        # construct the url
+        gravatar_url = 'https://www.gravatar.com/avatar/' + \
+            hashlib.md5(self.email.encode('utf-8').lower()).hexdigest() + '?'
+        gravatar_url += urllib.parse.urlencode({'d': config.DEFAULT_AVATAR_URL, 's': str(size)})
+        return gravatar_url
+
     @property
     def ip_string(self):
         if self.last_login_ip:
diff --git a/nyaa/routes.py b/nyaa/routes.py
index 82aa062..4df27a6 100644
--- a/nyaa/routes.py
+++ b/nyaa/routes.py
@@ -615,7 +615,7 @@ def submit_comment(torrent_id):
             current_user_id = None
         else:
             current_user_id = flask.g.user.id
-            
+
         comment = models.Comment(
             torrent=torrent_id,
             user_id=current_user_id,
@@ -626,6 +626,7 @@ def submit_comment(torrent_id):
 
     return flask.redirect(flask.url_for('view_torrent', torrent_id=torrent_id))
 
+
 @app.route('/view/<int:torrent_id>/delete_comment/<int:comment_id>')
 def delete_comment(torrent_id, comment_id):
     if flask.g.user is not None and flask.g.user.is_admin:
@@ -633,8 +634,8 @@ def delete_comment(torrent_id, comment_id):
         db.session.commit()
     else:
         flask.abort(403)
-    
-    return flask.redirect(flask.url_for('view_torrent', torrent_id=torrent_id))     
+
+    return flask.redirect(flask.url_for('view_torrent', torrent_id=torrent_id))
 
 
 @app.route('/view/<int:torrent_id>/edit', methods=['GET', 'POST'])
@@ -792,6 +793,34 @@ def _create_user_class_choices(user):
 
     return default, choices
 
+# Modified from: http://flask.pocoo.org/snippets/33/
+@app.template_filter()
+def timesince(dt, default='just now'):
+    """
+    Returns string representing "time since" e.g.
+    3 minutes ago, 5 hours ago etc.
+    Date and time (UTC) are returned if older than 1 day.
+    """
+
+    now = datetime.utcnow()
+    diff = now - dt
+
+    periods = (
+        (diff.days, 'day', 'days'),
+        (diff.seconds / 3600, 'hour', 'hours'),
+        (diff.seconds / 60, 'minute', 'minutes'),
+        (diff.seconds, 'second', 'seconds'),
+    )
+
+    if diff.days >= 1:
+        return dt.strftime('%Y-%m-%d %H:%M UTC')
+    else:
+        for period, singular, plural in periods:
+
+            if period >= 1:
+                return '%d %s ago' % (period, singular if period == 1 else plural)
+
+    return default
 
 # #################################### STATIC PAGES ####################################
 @app.route('/rules', methods=['GET'])
diff --git a/nyaa/static/img/avatar/default.png b/nyaa/static/img/avatar/default.png
new file mode 100644
index 0000000..7cde0a6
Binary files /dev/null and b/nyaa/static/img/avatar/default.png differ