I have the same question as DiabloD3, and I presume others do as well. Your desire not to hijack is honorable, but private email doesn't scale that well. I fear I'd be wasting your time to engage you directly. Perhaps you could write a short blog post and post it to HN for discussion? Or a Show HN? Or you could just answer here, toning done the marketing as much as possible.
Also, when are you going to add an Android app that does barcode scanning?