For the wikipedia entry for each of these terms, click on the bolded blue words below.

WOW! From Charlene Chausis, an invaluable up-to-date wiki! http://educatingeducators.pbwiki.com/

Alan Levine's 50 Web 2.0 Ways to Tell a Story

**A Comprehensive list of Web 2.0 Technologies**

(thanks, MNPS Tech Coach Richard Frank)

Blogs

There are several sites where you can search for blogs on any and all topics. You can search for blog entries on particular topics at google blog search. You can also set up a search for new posts at your favorite blogs on netvibes. If you want to create your own blog, go to blogger or wordpress.

Podcasts

David Warlick's Educational Podcast Network is an excellent place to start


Social bookmarking[[http://en.wikipedia.org/wiki/Social_bookmarking|]]

See de.licio.us and furl

Digital Imaging and photo sharing


flickr

slideshare

bubbleshare

Rss feeds and aggregators

David Warlick on Netvibes

Virtual worlds and communities

Scott Merrick with Jeremy Koester at NECC2007

Collaborative content tools

(This entry is linked to the entry for collaborative editor; there are many other tools that fit this term)

bubbl.us

gliffy

Voicethread


Open source and online software

Mashups

Instant messaging

Videoconferencing

more...