Web 2.0: What is it?

Web 2.0 is the new way that users use the internet. The aplications or websites are more user based rather than creator based. They are easily edited by the user for customisation and/or control. It has appeared in the last decade and has dramatically afected the way that users use the internet and also helps with everyday activities in "the real world" such as organisation , e.g. facebook invitations for parties.