Promoting betking is also helping scam and this has nothing to do with forum rules. As we know scam is not moderated, there's no chance that this user has been banned for promoting betking.
Unfortunately (IMO) that's true. There's no way Theymos would have the moderators hand out bans for promoting a scam site, although if memory serves me correctly something similar happened when Yobit was running its last campaign--but it wasn't because of Yobit's scammy nature; it was because the participants were spamming the forum like crazy. It was unbelievable how many garbage posts were cranked out during that brief period when Yobit had hundreds of signature campaign participants promoting them.I feel bad for some users who were just using the signatures for participating on their campaigns. I bet 
no consideration for their accounts, a scam is a scam and you've been a part with it.
Don't feel too bad for any of them. And this member OP mentioned wasn't banned because he was promoting Betking anyway; it was for another offense. no consideration for their accounts, a scam is a scam and you've been a part with it.