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.

Ryan Imel

Markdown for P2 will enable Markdown formatting within your status updates and comments.
If you use P2 for any stretch of time you might find yourself in a situation where you start typing out HTML. Since posting from P2 happens (or should) entirely from the front end of the theme, by default formatting options aren’t available. So if you want to format a list, let’s say, you might be tempted to start typing out <code>ul</code> and <code>li</code> tags. Or perhaps add formatting buttons that might clutter up the interface.
Markdown for P2 is another option, and will allow you to use the Markdown format when you post to P2. Learn more about Markdown <a href="http://daringfireball.net/projects/markdown/" rel="nofollow ugc">at John Gruber’s site</a>.
<h3>Kudos</h3>
<ul>
<li><a href="http://daringfireball.net/projects/markdown/" rel="nofollow ugc">Markdown</a>, of course, is a John Gruber production.</li>
<li>This plugin is almost entirely the work of <a href="http://michelf.com/projects/php-markdown/" rel="nofollow ugc">Michel Fortin</a> (released under the GPL, his copyright is included in the file), but wasn’t bundled into a neat plugin on WordPress dot org, and not specifically for this purpose. The credit for that code goes to…</li>
<li>Markdown support added using Adam Backstrom’s code via this <a href="https://gist.github.com/1561020" rel="nofollow ugc">Github Gist</a>.</li>
<li>Markdown logo (in banner image) credit to <a href="http://dcurt.is/the-markdown-mark" rel="nofollow ugc">Dustin Curtis</a>. Lovely, isn’t it?</li>
</ul>
<h3>Note</h3>
Technically this plugin will work with any WordPress site — it simply checks the_content and comment_text for Markdown — but this plugin is really only tested with P2. If you’re interested in using Markdown on your non-P2 blog, I’d recommend <a href="https://wordpress.org/extend/plugins/markdown-on-save/" rel="ugc">Markdown on Save</a> which I think will provide a better user experience in that situation.

Markdown for P2

Works beautifully

Markdown for P2 will enable Markdown formatting within your P2 theme status updates and comments.

Who's Online vs Markdown for P2