dIMdIM

How does it work?
DimDim runs entirely in your web browser, so it works on any computing platform.  Simply sign up for an account at http://www.dimdim.com and you can get started.  Once you have signed up, you can create a meeting immediately or schedule a meeting for a later date.  Then it’s just a matter of [...]

Twitter

Microblogging keeps even the smallest groups informed.
Have you ever wanted to take a quick class poll, or update students about a schedule change with ease?   Maybe you’d like a collaborative place for students to exchange ideas.  Maybe you’re adventurous enough to incorporate text messages into some instruction.  If any of these ideas sound interesting [...]

posterous

Blogging by Email
Posterous makes blogging simple and effectiveOver the last several years, blogs have become a popular means of sharing information on the Internet.  Groups and individuals can use blogs to share information in a more efficient way than email.  While there are many free blogging services available, by far the easiest to use is [...]