The pineapple usually attracts 140+ accounts and a good 30% of them are one guy,so I will pass on this offer.
Nitrogen also do not have multi account policy?
All you have to do to answer that question is open up the lobby and watch registration for a hourly freeroll.
For every legit account that joins there are 2.5 multi accounts roughly that sign up to balance what seems like one guys odds of winning. It has got so bad that you can see other people multi accounting as well.
So if you enjoy sitting back and timing each hand in hopes of making it to the final table,sign up...but the final table will consist of at least 2 huge stacks that are the same person and they will shove and suck out on the whole table.
Because there are so many accounts the freeroll also takes close to 2 hours to play.
So yeah they do nothing about multiaccounts because it goes against the spirit of bitcoin,or at least thats what they tell you.