[33girl]

If he's in any sort of power position on IFC, threatening to "blacklist" you should be enough to get him, and very possibly his fraternity, disciplined. If you hear anything from anyone in other fraternities, I would go to the Greek advisor. Most likely he is just blowing smoke. Fraternities don't really interfere with each others' rushing and bidding to the extent sororities do, and this guy saying "don't bid rutrush because I have blacklisted him" would more than likely earn him nothing but a very large laugh in his face.

But seriously...I would think twice about joining a group whose members can't keep brotherly disputes between brothers and instead drag an innocent bystander (you) into them. I know this sounds like a girly pussy answer, but what if these same guys decide it would be fun to "mess with" you?