Most have probably never encountered threads about this website at all. Nor did they know how YoBit operates or what an InvestBox was.
Where do you draw the line? If the campaign puts a malware link into the signature, is that still ok? If the signature campaign asks you to post in the Yobit thread, is that still ok?
BTW there was a lively debate about X10 in the signature campaign thread. That's where Yobit requested to change the signature, that's where yahoo said he was going to ask for a change, etc. If you're that ignorant then you probably shouldn't be in a signature campaign to begin with.