My latest article Secure RSS Syndication, is up on XML.com. In this article I present a Greasemonkey script to make FireFox decrypt a Blowfish-encrypted feed shown in Bloglines on the fly. And the encrypted data, it's held in a microformat.
We're playing buzzword bingo.
Source code and test feed are available.
Update: This project explains my interest in which web-based aggregators preserve microformats.