Thanks for posting about this, I think you've mentioned it before and its changed my mind about offering a free product, other than a 30-day trial for my current side-project. I don't want to get a couple hundred users who love my product but are just a burden for me when the site fizzles. I also don't want 500,000 customers I cannot monetise or even get any marketing value from. With a consumer-oriented site like the SP it is different - you have to give something like that away