I have recently joined Bitcoins Brain program just to test it out. It looks like a typical Ponzi Scheme: no product, you just put money in for high returns. Immediate red flags:
- Website is registered in Russia with short life expectancy domain name - http://www.scamadviser.com/check-website/bitcoinsbrain.com
- They don't really explain how it works, just whole bunch of fluffy words how cool it is without any proper explanation.
- Very high returns
Although, It has been paying so far (I have been receiving my payouts every 4 hours) and I guess if you get in and out early enough you could make good profits while people are still joining. To break even you need 14 days with current interest rates (0.3% hourly * 24 * 14).
If you feel like gambling, join here https://bitcoinsbrain.com/?a22111