I'd like to think that you have taken this idea from a comment you left long time ago on one thread of mine about people who used 100+ accounts to join social media bounty.
As I suggested at the time this is the best way to limit the multiaccount since now with the merit system is almost impossible for one guy has 100+ full members accounts, even if he will has 100 of those accounts we can easly hunt them with a little of effort and red trust them.
From my small experience here you are one of the best managers here not only for the high trusted payments campaign that you run but also because you actually do something against cheaters.

I really love this old suggestion and I hope othes managers will do the same.