Web 2.0 is something that all of us use everyday. in fact you're using it right now. It makes interacting with new people easier and allows us to share pictures (Flickr, image shack, tiny-pic) videos (YouTube, MySpace, VYou) etc with the world. Social networking is a HUGE part of our world today and without Web 2.0, we probably wouldn't have many social networking sites. I think that Web 2.0 is pretty useful, i mean none of my homework would have been possible to do if i didn't have the internet and Web 2.0. Overall, Web 2.0 is probably one of the greatest software's ever made.