Why do you help the OP of Giveaway threads?
Is your reason that you don't want any cheaters, scammers, traders to be introduced to the trackers?
If yes then why.
Is it because cheating, scamming and trading are against tracker rules?
If yes well guess what last time I checked, public giveaways weren't allowed on most if not all trackers.
So by you helping out the OP with their Giveaways you are in essence helping them break the same rules you did not want to break in the first place.
So I say let them be, if they want to do giveaways and break rules what is one more broken rule by inviting a trader?