It's not an altogether capitalism-friendly community. A few months ago when Nintendo Wii systems were in very high demand, I got my ad yanked, apparently because they thought my profit margin was simply too high.
Well, maybe, maybe not. Even if it might have a few warts, they do provide a free service a lot of folks use. Meanwhile, ScrewBay, aka Ebay, thru nefarious means has gotten a 26 or 28% interest in the private company craigslist. And you know they've got in mind it take it over, since craigslist has cut into their profits. I hope ebay does not get control of craigslist.
As far as pulling ads, both ebay and craigslist do it, for varying reasons. For example, both of them pull down any ads for Southwest Airlines Rapid Reward vouchers, I presume because S-West gave them both a rash about it. And if you put just about any software up on screwbay with the name Microsoft on it, there's a good chance they will yank it. Ebay doesn't look at what the item is whatsoever. If M-soft tells them to yank it (VERO rights BS), then they pull it and say unkind things to the member who posted it.