http://www.gabcast.com
Make podcasts with your phone. No microphone or audio editing software required.
http://twitter.com
Web Worker Daily: “Twitter can deepen virtual relationships in a way that email and IM doesn’t.” “I’m not sure exactly what this project by Gregory Chatonsky is [Twitter] but it’s blowing my mind. Video, photos, ambient music, and giant sliding Twitter updates all mushed together into some kind of never-ending, trance-inducing, experimental documentary film thingy. Wow.”
http://www.raptivity.com/
Raptivity outputs interactivity to a single Flash file which fits into eLearning tools. Raptivity tracks completion status, score and responses and provides this information to authoring tools for SCORM/ AICC tracking with LMS.
http://secondlife.com
An online society within a 3D world, where users can explore, build, socialize, participate and learn. 
