Annika Backstrom

The “Who’s Online” sidebar widget shows a list of recently-active 
blog users. It has been built with Automattic’s <a href="http://p2theme.com/" rel="nofollow ugc">P2 
theme</a> in mind, but does not depend on P2 
functionality.
The most recently active users bubble up to the top. After one week, 
users fall off the bottom of the list and are hidden until they return. 
As of this writing the list does not support live sorting; the user 
order is fixed, and users missing from the list due to inactivity will 
be added to the top if they come online.

Works as expected

Who's reading your P2 blog right now? Keep track.

Scott Basgaard

P2 Likes brings Facebook-like functionality to your P2 site. Your users can now show interest in threads by clicking the like button.

P2 Likes

Works just fine on latest WordPress, even under Mercury child theme, although I'll have to do some styling for the avatars of those who liked a post or comment (they get slightly cropped on the right side).

Nice!

Give positive feedback on threads you care about on P2

Who's Online vs P2 Likes