You will keep valuable information from being part of your "special" room if you have a post count minimum. That **** is so beyond retarded, it's almost as bad as the four asterisks before the comma in this sentence!
The major reason for the attrition rate is the censorship, the lack of experienced contributors and the lack of excitement. As stated above somewhere, if there were giveaways, more emphasis on system build logs, correct information instead of rampant retardation and misguided recommendation, you'd have more buzz and more vendor curiosity. I firmly believe that a classifieds section should be a site/subsidiary all to itself. Classifieds in conjunction with reputable information don't go hand in hand......and vendors don't like the damned things. Period. It doesn't matter how little they SAY about them or how little they complain if asked. If you were a fly on the wall of the dinner room at a vendors home, you'd hear a few choice words they have to say about classifieds sections. They get caught answering stupid questions about used crap and the bigger the classifieds section gets, the less business the vendor sees from the main portion of the site. Less bidness he sees, the less contributions, giveaways and "sponsorships" you'll see. If vendors aren't present, their perceived value of the site is low. This forum is a joke to most on 12vinsider.com, the industry only forum. But that forum is boring and full of just as much rampant misinformation as caraudio.com. The only thing is, there are more folks there with egos that have no way of being validated than in here. They have shops and work for manufacturers, so they are always right; remember that. RoR.