What is Web 2.0?

[Quozty]

is it using AJAX or is it social interaction and taking the power from "The Man"

youTube,Digg,Flickr,Delicious

what do they all have in common?

SOCIAL interaction, theres no editors posting the stories to be read, it you want to see a story up there, post it and people will vote on it, you want to bookmark something you think other will like, bookmark it,

tv networks and newspapers are worried over this and hence taking steps to make there own versions but sooner or later they will give in and give content to places like youTube with advertising embedded