BetaMarker.com - Like it? Mark it

Lists Softwares submitted by users, and lets you mark the software or bury it. Works on the same model as digg but for betas. The softwares are for all types of Operating Systems.

Beta Marker is about keeping track of software you like and about discovering new software. It revolutionizes software rating by shifting the power to the community of software lovers. So now, in the sea of new software, the screening is done for you. You get only the best of the best.

It might be a killer because such a model doesn't exist for software. a way to keep track of betas you like (like every new version of firefox 3...) and the digg model seems to kill no matter in which application.