Here are some links from our "Big Board" activity on Web 2.0.

First--the templates for the timer and the Big Board activity (along with many others) can be found at Jeff Ertzberger's website.

Sites we've found since then to share
Robin's smartbrieflink:

21st century curriculum - NAIS article about integrity NAIS article

Words, Words, Words: Sites that have to do with using language (written or spoken) to communicate.
Wordle Link This is the site that makes a cloud out of the words in a document.
Pictures
Picture management sites include Flickr, and Picasa(a Google product)
TED videos--see the talks without spending upwards of $30,000!
The More We Get Together (PLN's)
Independent School Educators Ning: This Ning tilts towards tech types, but includes classroom teachers too. Participants are nearly all from independent schools.
Classroom 2.0: This very active Ning is full of classroom practitioners.
Information Overload
Diigo: Be Sarah's"friend" and get access to all the IOI sites she's found and annotated!
CommonCraft Videos: This site has the great, short videos explaining various tech (and non tech, there are videos explaining zombies and presidential elections) topics using plain English and hand drawn illustrations.
Landmark-Project: This is David Warlick's site. It includes tools for building rubrics and making bibliographies.
Other citation tools: Bibme, (you can literally put in just the ISBN and it'll give you the citation in any format) Zotero (works as a Firefox extension).
Lucky (wildcards)
Geocaching. This cool hobby involves technology and old fashioned sweat.