Yeah... that's asking for a heap of "nice job" or "bump" or "I have a really easy problem but posted here before looking anywhere else cause at least I get free stuff" posts. Meh.

Maybe if you had a thank you system or something, that would reward people that helped other people or gave good feedback? It's tough to implement, because it leads to the fallacy that people that post more are somehow more knowledgeable or experienced.