PubPeer is taking off

PubPeer, a site for anonymous (or non-anonymous), post-publication peer review is taking off nicely. Traffic is increasing to the site and there are a lot of interesting comments, including both detailed commentary and brief observations. Some discussions are getting quite involved (over 15 comments).

Since the last time Labrigger mentioned PubPeer, they’ve added some nice features.
1: Recent comments. (pictured above) shows the most recent activity on the site.
2: Alerts. Users can choose to receive email alerts whenever someone comments on their favorite
papers.
3: Simplified author signup. Get to commenting easier.