I never realized that a thing called web 2.0 even existed. Its kinda cool to know that we can edit pages. I never knew that if I did the right stuff I could post stuff on sites that were wiki's. The concept of the web being able to change from everyones input is a nice thing, because there is so much information out there that no one person could possibly compile all of it, so its really helpful that everyone can contribute.
I think it could be useful in a class room if there was a board out there with ideas, kind of like a blog. Have students post ideas and game that they might think would be fun to do during class, or even drills for a sport like track or basketball that a student liked.