Just wondering, does anyone else here use Aplia (www.aplia.com) for any of their courses?

When I TAed Intermediate Micro last summer the instructor used it for problem sets and I really liked the interface. Unfortunately, it's almost entirely a collection of Flash modules, so it will not run on the eDGe until we get an upgrade to Android 2.2. When I start teaching, it's probably something that I'd consider using. Has anyone else have any experience with it, either as an instructor or student?