Google wave - Web 2.0 at last

Google has acidentally created the first good realization of web 2.0.  By providing a way to mark up hypertext, they are on the path to resolving one of my long term frustrations with HTML and Web 1.0.  It will now be possible to collaborate in fine grain, with minimum loss of context because of tools that lack the ability to point at a part of a document.

As Tim O'Reilly says:

Our experience with collaborative editing of book manuscripts at O'Reilly suggests that the amount and quality of participation goes up radically when comments can be interleaved at a paragraph level.

Colaboration and sharing of data is about to take off in new and very powerful directions. I highly recommend you take a few hours, watch the demo video, and dive in to see what the future is going to bring. It's very exciting.