Kyle Scheuerlein

Automatically turn all posts into excerpts of 300 characters and add a “Show More” link that will load directly in the page. If your post includes a picture, it will also obtain a thumbnail and place that at the beginning of the excerpt. Supports Infinite Scroll, too (assuming you manually enabled it on your P2 site)!
<ul>
<li>Shorter posts will be left alone, unless they have a picture</li>
<li>Posts with a picture will always be turned into a thumbnail/excerpt</li>
<li>Expanding or contracting a post will scroll to the top of the post</li>
</ul>
Planned:
<ul>
<li>Long posts with embedded video and no image include the video in the excerpt</li>
<li>Change the character length from the admin screen</li>
</ul>

Show More for P2

Works smoothly even on latest WordPress & Mercury child theme of P2.

Plug and play

Automatically turn all posts into excerpts of 300 characters and add a "Show More" link that will load directly in the page.

Daniel Bachhuber

Easily subscribe to a P2 comment thread without commenting using a “Follow” action link like WordPress.com has.
This plugin requires Jetpack and P2 to both be activated. It doesn’t yet allow you to unfollow, and there are some minor interface quirks.
Happy to receive feedback, questions, feature suggestions, and <a href="https://github.com/danielbachhuber/Jetpack-Follow-Link-for-P2" rel="nofollow ugc">pull requests</a>

Jetpack Follow Link for P2

Easily subscribe to a P2 comment thread without commenting using a "Follow" action link like WordPress.com has

Show More for P2 vs Jetpack Follow Link for P2