Help a Brainiac, What is in your opinion the best Web 2.0 service or website?

I'd most likely say the WWW still. Though many might not consider it as a service, it plunges us heads-on into the maze of evolutionary e-quotient so to speak.

Sites that are equally enticing are...

1. http://www.netvibes.com/

2. http://www.songbirdnest.com/

3. http://www.zimbra.com/products/product_editions.ht...

I would have to go with Wikipedia. By opening up the encyclopedia to the world, you now get a lot of information about a wide variety of subjects you'd never find in the World Book. Sometimes the information is suspect, but usually it's a great place to start research. A good list of sites is below.

My favorite Web 2.0 sites are:

www.netvibes.com

www.flickr.com

www.techcrunch.com

I like:

http://newsvine.com/

http://digg.com/

http://slashdot.org/

And pretty much anything that's coming out of Google these days.

I think Web 2.0 is such a fad though, most of it has been available for years now.