But be careful, the road to 1M RPs is really long, and once you reach this mark, there are serious risks bitcoin will be on a much higher price range, what can consequently make freebitco.in's staff team to reduce the currently exchange rate of 1 RP : 1 satoshi to something like 1 RP : 0,5 satoshi.
Possible, but I'd be guessing, that if they were to go that route, they would first announce that the exchange rate for reward points is now variable and depends on BTC price, so it would go down progressively rather than jumping straight from 1 sat to 0.5 sats.
But that's just speculation.