Next time when you are trying to scam users, please atleast see some effort.
Are you expecting users here just to send you free BTC?
"Doubling your money" type of things have been around for ages and they are always scams.
If I could double money I would be rich. This is a 10% gain only, not doubling by any measure. I am taking ONE deposit at a time and keeping a limit of 0.1BTC per transaction (so the max I could possibly scam is 0.1BTC, pennies compared to the total of 0.56BTC I have lent out on this forum).