Alpha version of IOU tracker

Have been experimenting with .net4, MVC2 and EntityFramework. The result is a IOU tracker that is available at iou.nu.
Service is free of charge and feel free to try it out.

I know there are several other iou trackers out there, but since the most lack some features and I needed to dig deeper into net4/mvc2/EF anyway so why not give it a try!?