http://dev.evernote.com/doc/
http://dev.evernote.com/start/guides/ruby.php
https://github.com/evernote/evernote-sdk-ruby

Since it seems to be the de facto information store, I think some Evernote support would be cool.

Ability to add/edit notes, add tags, etc. Also ability to generate events when a 'watched' note/tag is changed/etc.