Level selling changes a little. Price ranges between 0.01 to 0.5 BTC per level. Minimal level to sell is 0.1. So the bonus won't be lower then 50% and bank will grow faster. I wish you all the best.
It is very good that at least half the deposit is used for bank but you could allow bonuses of less than 50% without taking more than 50% of a deposit to pay for the level sell, exemple : A sells for 70%, B deposit 1BTC and get 5/7 * 30% bonus, bank increases of 0.5
Next bank could arrive within a week
Play responsibly guys, this is a pyramid..
Yeah obviously MakeBTC.org is clearly a pyramid - so it's little risky
.This is why:
I play at
bitcoinchef.info 
, people are getting paid large amounts,but not from other investors money.
Forum thread here: https://bitcointalk.org/index.php?topic=458770.0
When are you going to stop spamming everyone?
You can't pay everyone if you have nothing to earn, if you wanted to give away you wouldn't need people to make big deposits; it seems extremely SCA.MMY