How do you recruit a few hundred closed beta testers?
RiderOfGiraffes: This isn't quite answering your question, but I think it's relevant.I recently needed some alpha testers, so I picked a community I thought would benefit from the final product and announced that I had an unattractive, bug-ridden experimental version of a product I thought they'd find useful.  It was pretty much guaranteed to lose data, but if they tried it, they had a chance to craft it into what they wanted.The 5 who responded were absolutely invaluable.  It was hard, because they told me I was wrong in so many ways, but the second version is infinitely better.  More, I'm still getting advice from that first flux of feedback.  I keep going back and re-reading it, and it's repaying me many times over.Have you had any alpha testers from the wild?  Your product stability may be at the beta stage, but is the product service?