There's a good side to it though: signature campaigns mean people are actually willing to do things for Bitcoin, which adds to it's acceptance.
It has become its own little thing within the economy of the forum, and isn't necessarily a bad thing with good users overseeing the campaign. It only ever really becomes a problem when poorly managed campaigns are allowed to advertise on the forum. Especially, the altcoin related ones as there is so many of them. At least the ones paying in Bitcoin are somewhat managed or at least appear to be.