I think that the principle of Blugrush is good - it's just a link exchange widget. I just think that it was released too soon without providing many details on how it works. John is a marketer, not a super programmer. He sure did over promise and under deliver, but looking back at posts what did he promise, exactly? Hats off for the buzz he created, but a solid product with clear goals would be more useful to us bloggers (especially if there was some sort of rev sharing).