Earlier quoted context omitted.
You didn't really share anything someone would need to valuate the site publicly. You (well, Jason) posted an auction with no information about costs or profit, traffic sources or subscriber turnover, handover or whether the billing info of the customers would transfer, etc. These are the most basic pieces of information you'd expect to see in any listing of a site for sale there. Nobody responded to questions on the…
For some backstory... Flippa contacted us after we posted Sortfolio for sale on our blog ( http://37signals.com/svn/posts/3172-sortfolio-going-once-goi... ). They asked us to list on Flippa too. So I said, sure, we'll list it on Flippa too. I couldn't include specific information the way I wanted to include it, so I didn't include everything in that listing. I got a few private inquiries, they didn't go anywhere, and…
Your comments on buyers needing to qualify themselves to get a response is right on. Professional buyers pitch themselves to sellers as much as the other way around.