5 burstcoin is not much for start. You can get it from faucet if you like. Try, take faucet ,send and wait as soon as there are burstcoins to cover your double you get double. 10 burstcoin. (…)
That is the problem. The only way you can afford to offer a return of 100 % per minute is to use the "investments" of newer victims to cover those of older ones. Initially this might work for a time while many victims are joining.
But eventually the number of new victims joining will either stay constant or go down and the ponzi scheme will be unable to repay "investors". It will disappear, leaving a few individuals richer than before and a large number of victims with nothing.