What's web 2.0, we get asked a lot. One example. Firefox is a great browser. Microsoft have stolen ideas for their Explorer 7.0.  But download Skype 3.0 beta. Then see how one idea talks to another. Using Firefox you see phone numbers highlighted on websites. One click and there's a connection, via Skype, to that telephone, anywhere in the world. Simple, cheap, one thing leading to another.