My son, Boris, has just sent me an invitation to a new Web 2.0 tool similar to Twitter, it is called Plurk.I immediately registered and started exploring the service. With 140 characters, with a unique feature -- time line -- you share/respond your feelings, favorite video, etc. You can follow some people or be followed by the fans of yours. Some users say that they get the responses to questions faster than on Twitter. I need more time to paly with it. I sent the invitations to my students. Let's see what will happen.