I've almost got all my seed money back from the Brain already and will be nothing but profits in a few days. Have 7 more days to go on BitKush till I'm even.
There is no doubt that they are Ponzi schemes. But it's worth the gamble to me. If they last a few months I can get around one whole free Bitcoin. If I break even then nothing lost.
Pretty cool getting that transfer every 4 hours. ( Once daily from BitKush )