A few weeks ago I joined www.topcoder.com
I think its a really amazing site because you learn a lot from doing the challanging programming problems and you can make some money doing it.
Also, you get to find out just how good of a programmer you really are. There are 2 competitions per week with a few hundred programmers competing from all over the world.
I think anyone who wants to improve their programming abilities should join.

Bye.
ps. if you join www.topcoder.com please put 'konsept' as your referrer. thanks.

That wouldn't be very nice, since I posted about this before. ;-P

Sorry Psion, didn't know you wrote about this before.