This, it's a nice and (maybe) real solution but all the manager/maintainers of the signature campaign should cooperate in the selection of the valid users. I have suggested to pay all the quality posts and not the number posts, but it is obviously a lot of work and it will be not a good promotion to those services related to bitcoin.
Hmm... so the managers of the ad sig campaigns should "vet the posts".
I doubt that they really care as from their economic perspective all that matters is the number of posts that have their sig.
You have heard the term "any publicity is good publicity" I presume?(they are happy enough to force that work upon the mods as there is *zero* penalty for them)
Yes I have heard that term and I agree with you, the users are posting crap posts (and they are victim of themselves) and they are banned from the forum but this is not the real solution to the problem.
Well if you really want to filter the crap apart from the valuable ones, you really need to do some heavy work to achieve positive results. Campaign managers do a lot of work, but filtering and setting some standards before accepting users is a good way for them to save money, too. so why not add an extra effort in managing the said campaigns? Setting limits to the number of users who are eligible to join the campaign is just one way of reducing the number of crappy posts in this forum. If this is done by campaign managers, we could still see the valuable topics that should be discussed regarding bitcoins.
You should open a thread in the service discussion and ask if the various sig. campaign manager will help you in that cause but as CIYAM written in his post
"any publicity is good publicity". I predict a new spam wave with the introduction of the "avatar campaign" maybe the unique valid solution is the "ignore function".