Let's keep it simple for starters. We could really use a hint as to why returns are so strongly dependent on the size of individual deposits, if not for the reason documented in the Currin Trading Ponzi (http://web.archive.org/web/20091026234156/http://geocities.com/currintrading/ On a side note, the text also documented neatly why an operator rarely replies to garbage like this).
An interesting read at least... Here's the link to the second page if anyone is interested.