I like the idea so I'm trying to think of an added benefit to using this service. Could you middle a bet at two books?  That is, are the odds at books in the network sometimes different so you can get over 209 and under 210.5 on a given nba game?

Are the transfers instant when you deposit and withdraw from a certain book?

Finally I do need to see someone posting that they've used the service before I would consider depositing.