In reply to Alec Kinnear.

Hey Alec,

Postmatic (and Epoch) both using native commenting. They are just comment plugins that layer on top of the native comment system. You can see a bit of how it works at http://gopostmatic.com/technology.

You can enable image (and more) attachments with Tom McFarlin's Comment Images plugin. It sadly does not work with Epoch yet but is a good solution for stock commenting setups. I will be harassing Tom shortly about updating it for Epoch compatibility and we are also looking at MediaEmbed for even simpler audio/image/video/whatever support.

And. Man. Thanks for the kind words and support!