Here, you can create websites that mix all the best features of wikis, social networks, blogs, and message boards into a rich, user-generated community based around the whatever-it-is that rocks your socks. A social website that's so easy to use, anyone can participate.
Voice based elearning tool. A teacher can create talkgroups that are like message boards but with voice and not text. It is easy to interact with students without being in the classroom to practice conversation, give oral presentations and collaborate in different projects.
ScribLink is a free online, Java based whiteboard tool that users can share in real-time. When you go to the site, a whiteboard is automatically loaded for you to use, so there's not even a need to register. The user invites others to collaborate on the whiteboard, and it's even possible to save print or even email the work. The tool also has a built in chat too, and voice over IP conferencing - so talk for free as long as you want!!! ScribLink also allow users to transfer files to each other, and now there's even an iPhone group messaging app.