Assigning personal responsibility to campaign managers in regard to what users enrolled in their campaigns post should work better. Kicking a spammy user from a signature campaign would most certainly make him stop posting altogether without banning him directly. Die-hard spammers who are spamming regardless of whether they are wearing signature or not should be the mods' concern, of course. I'm curious if you understand that your posts are considered as spammy simply because you post under the signature campaign which is claimed to encourage shit posting?
Personally, I'm free from such prejudices, but there are different opinions
I understand your point. I am part of the Bitmixer campaign for the simple reason that I like the service that they offer since I use it very frequently, and I like the fact that it is an automated campaign with barely any issues.
Do I get bothered by other spammers from Bitmixer? Yes, of course, but these people should either get a heavy warning to up their quality to a level where people can understand what they are saying, and that their posts are at least related to the OP or the post that they quote, or they should simply have their signatures removed by an administrator or a global moderator (if it's at least within his power) including with a temp ban or a full ban depending on the intensity of the shitposts
Now we have a service which does something good to the whole Bitcoin ecosystem directly as well as indirectly by allowing a lot of users to earn bitcoins and thus letting them get involved with the Bitcoin community. We have users who are actively advertising this service in a constructive way. And then someone wants to ban it simply because some (well, a lot of) users promoting this service are posting shit...
Would that do any good to Bitcoin?
It's actually very simple, administrators have the power to hand out bans to spammers, let them do it
I would venture a guess and say that banning these users would be a shameless abuse of the ban-hammer. Yes, they are mostly posting total shit, but this is evidently not enough to start giving out bans