It's up to the campaign manager to take out those wearing their signature link that are spamming this forum,all signature campaign don't want their campaigner to spam this forum and about tipping it's very unlikely nowadays they rather give you trust rating than tip you..
Right. And the action is in process i guess. I have read in a thread where the owner of a campaign had given negative trust to the campaign manager for not taking any action against the users from their campaign who are spamming and being paid for poor quality posts, he told him that if he finds and ban those spammers after that he will remove that negative trust from his account.
I think all managers should do this, they should keep an eye on every user and if they find someone spamming then they should ban them from their campaign and also should report it to forum admin and let him take some action against it as well.