Hi, I'm leading the open beta testing for a free iPhone app. It scans book bar codes, retrieves data about their selling price, and then calculates how much profit you would make by sending that book in to a company that does the selling/listing. I would very much appreciate you guys' feedback, plus you could make some money.

The app can be downloaded here:
Giggilyzer for iPhone, iPod touch, and iPad on the iTunes App Store

To beta test, you need to make an account, the easiest route being the aforementioned company's website:
Giggil

We're looking for 100 testers, and just started registering. The app is fairly simple and I'll likely send feedback forms a couple times.