Yeah, this came up on my facebook feed. I'm betting on it being a scam... just keep paying out so long as the investments keep coming in and then pull the plug when you calculate that you've got the peak returns for your scam... Assuming that peak scamming profits come after the 14 days, any super early adopters would stand to make a profit so long as the website stays up.
RE: Bitcoins Brain (BitcoinsBrain) BTC Investment Program could be a scam / Ponzi scheme