Please add the name of the Read/Write web tool you are using if it's not listed and your name, username or contact information for that site. With this list, teachers who are looking to try out the tool will know who they can contact for help. Thank you for your contributions!

Blogs
http://library.bigbadwolf.org Robyn Hannan (but any teacher can have their students use this page)
http://curtinlanguagearts.wordpress.com/ Seth Decker
http://crsaka.blogspot.com Craig Kaufman

del.icio.us (catalogs websites and allows you to share them with others)
http://del.icio.us/cfgreevy4

Facebook (find high school and college friends--and some students too!)
http://facebook.com
Seth Decker
Matt Radspinner

Flickr
http://flickr.com

Google (gmail, googlepages, igoogle, calendars and so much more

Twitter
http://twitter.com
http://twitter.com/cfgreevy4

wikis
http://curtinms.wikispaces.com
http://mrgreevy.wikispaces.com

Zoho http://zoho.com/ (web-based word processing, spreadsheets, presentations (like PowerPoint(TM)), wikis, and much more--for free and accessible anywhere with web access; no excuses that the library doesn't have MS Word on their computers!)