Its not a scam, it worked for me, twice already. (PM me if you want proof!)
The way it works is - as long as there are deposits happening, you will be paid double eventually( as soon as there is enough to pay you)
If there is not a single deposit within 48 hrs of the last deposit, then the "bank" is split among all those who were unpaid.
This is a very effective scheme - keep depositing people!