Science and technology

ZDNet
Tech News, Blogs and White Papers for IT Professionals.
[http://www.zdnet.com]

c|net
Tech product reviews for cell phones, computers, MP3 players.
[http://www.cnet.com]

The Register
Sci/Tech News for the World.
[http://www.theregister.co.uk]

Slashdot
News for nerds, stuff that matters.
[http://slashdot.org]

Whatis
Technical definitions.
[http://www.whatis.com]

How Stuff Works
Site, describing the way of operation of many things.
[http://www.howstuffworks.com]