There are probably several fake accounts but so far the risk/reward for me has been good. Like all ponzi schemes it's better to be in at the beginning and not the end, so who knows how long this will run its course. So far I'm actually UP and this one investment completely erased my losses from btc-flow.com that I got in too late by about 1.5 weeks and lost about 9 bucks worth in the end.
I'm happy but I'm definitely not risking more than I can consider a "donation"
Have fun and be as safe as possible. For me this is still better than letting my small amounts of play btc just sitting idle. Protect my orig investment and play with the rest. So far that strategy has worked and am now sitting at .1022 in the play btc bucket where I started with .003 about a month ago. My main bucket is a totally different beast and much more conservative strategy to handle that since it's a shared fund and had real investment dollars behind it from about 2 years ago.