This has been discussed in the past and while I am biased since I sell my signature I dont think thats a valid option unless there is no other way. This would have to include referal links as they are somewhat paid signatures. A more difficult case would be doog's signature for his own casino just-dice. Would that be banworthy? Its a paid signature in a sense as its advertising for his own casino and he is earning money off of it. How about e.g. SaltySpitoon advertising their sales thread, is that allowed? As you can see this will not be easy to draw the line.
Exactly. It was discussed multiple times and no solution/alternative was found. Well the matter is rather complicated. Obviously with every decision there will be a lot of unhappy people. Making the right call is a tough decision.
I said all the signature campaign that paying you for post here in the forum, I am not against the personal sig 'ad' itself.
This is wrong because punishing everyone because of certain individuals is rather illogical. There are several high quality posters that have a paid signature. It's quite obvious who's spamming and who isn't. The most (let's call them) respected people here don't post that often and usually don't have a signature like that. There are individuals who make 20-40+ posts a day mostly consisting out of 1 liners. Those people are the ones that should be punished (if they indeed are spamming), not everyone.