Personally I just have my car aligned to my specs and leave it there all the time. We don't get much neg. camber at stock ride height so street tires wear very well.
My target settings:
Front -0.7 camber, zero toe, max castor
Rear -1.2 camber, 1/16 toe in
If I notice unusual tire wear from dropping a wheel in a hole I get it re-aligned. Otherwise I set it and forget it.
If you want to tinker with camber settings you can use the sboxin method:
http://www.renntech.org/forums/index.php?/topic/24570-diy-camber-adjustments/