I agree, I don't think a large enough number of people would find it all that interesting but there should be enough to make a fun sustainable platform provided

I agree, I don't think a large enough number of people would find it all that interesting but there should be enough to make a fun sustainable platform provided it resources put into it are kept to a minimum. I agree that it would be practically impossible to work out how much the companies are worth by traditional investor metrics, discounted cashflow for example. But what about other metrics - user signups, number of times tweeted, number of followers on twitter, number of uniques on site, number of mentions in articles/ posts online... I believe http://appdaq.net/ http://appdaq.net/ used some of these ideas.