My personal view is that the evil "refund" word has no place in the hyip arena. i much prefer rounds with no baggage from the last round.
It causes way too much harm especially to those that feel they have been put successfully on the promise. In any case if your mind is really stuck on the possibility of getting one empty it now. I'm talking about a Hard $$ one here not the usual type that require many jumps through hoops to qualify and years later you are still waiting.
Check around Jan 2009 how things have progressed by that date one way or another you'll know the go.