Indeed. I use it a lot (I use amazon a lot - shoot me).
Set up a twitter account to link to it, then set up twitter to SMS you messages from camelcamel.
I now flag things I want, set a target price and then get texts when it hits the target. Use amazon app to then purchase the item from my phone.
Have saved hundreds over the last year or so with this. Dead handy :-) They get an affiliate payment if you purchase through the links on their site - more than happy with that.
Darren