Few random sites that hit upon recently.

siliconindia.com - the humour section of this website is hilarious, i can't stop laughing over the jokes.

robozzle.com - Robot programming website, very addictive, interesting and brain power consuming.

mashable.com - techie news portal, very intersting articles.

bumptop.com - Nice Destop GUI, but needs more functionality for a person to stick to it.

photofunia.com - Make a fool of yourself (and your friends).