Image via CrunchBaseI mention twitter in my classes and try to get students interested in social media.
Here are a couple of resources for new twitter users
A History of Twitter - neat insider background story about the creation of a new tool
TweetNet - info for beginning twitterers
A look at how the interface has changed over time - good use of hte Wayback Machine to get old screenshots
Here's my twitter stream - http://twitter.com/kgregson
I've added links to some stories about Twitter (actually Zemanta added the links - I love the zemanta blog add-oh.