Web 2.0 and ALL that...
by Ron Lichty
Always On is hosting Marc Canter's amazing tour-de-force through Web 2.0, Breaking the Web Wide Open! :: AO
Want to know about microformats and mashups and the semantic web, and get understandings of SIP (Session Initiation Protocol for internet telephony and conferencing), FOAF (Friend Of A Friend, a schema to describe people and relationships in a way that computers can parse), xHTML, XFN (a microformat standard for representing your social network), and OPML (Outline Processor Markup Language, a hierarchical file format for storing microcontent and structured data developed by Dave Winer of RSS and podcast fame)?
This is the place.