I comment, quote and joke around in FS threads all the time. I also spend at least a grand a month on here. You can always go to ebay to buy and sell, no chatter or community there. You wont even have to be polite to anyone.
You're missing the point by about a mile.
I'm not complaining about a little banter in a sales thread - what is annoying, though, is people posting drivel to either drive up their post count or just because they can. Does every modern sales thread really need 15 posts of "moar" & popcorn, and random pictures of either fatties or cheerleaders - particularly when those posts push down the sales threads where the seller is actually posting books?
As far as im concerned this hobby is lucky to have people that want to be here. Quit being so uptight. Why would you give a mess about what people are posting as long as they having fun and doing so within the rules of the forums. No need for the blanket insults (peanut gallery)