You mean something like http://www.collective2.com/ ? One of the difference is that on c2 you can't see the internals of the algo (because it could also be not an algo but somebody deciding how to invest, actually the algo is not implemented on the site but outside, the site only receives buy/sell commands).

on Techzing podcast can find and interview to the founder (a bit old, 2011): http://techzinglive.com/page/868/155-tz-interview-mathew-kle...