http://www.mybraintrainer.com/brainpower/

Tests reaction time, accuracy and concentration.

Anyone use this? i recently stumbled upon this, seems like it is a useful site. Might sign up and check out the rest of the tests they offer

managed a 148 age group 20-29 on the free test.

http://img139.imageshack.us/img139/8260/mybraintrainerlw2.th.jpg