Update (28 December 2010): Woot-Aloot is now located at http://www.wootaloot.com, and looks 1000 times nicer. Happy wooting!
Woot-Aloot couldn’t be simpler - tell it what you want to buy, and when that product is available on Woot.com, it will email you an alert.
(nerd info: Woot-Aloot is written in Python and takes advantage of the generously-resourced free Google App Engine program. I’d strongly recommend it for any little programming projects you might want to do!)