On point 1 take for example Ubiq, it'll cost you say 10x the 1h rate or $4.7k, and the 24 hour volume is 130k, that seems like a pretty good ratio to me. Or Bytecoin - let's say 100x since it's harder to get the capacity - cost $50k, 24h volume - $18m.
On point 2 I thought the entire point was to double spend - so you have 1 einsteinium or whatever, you put it in the exchange, you use it to buy bitcoin. You re-spend it at another exchange buying bitcoin. You got twice as much bitcoin as you paid for. As long as you're out before it becomes obvious what you've done you make profit.
On point 2 I thought the entire point was to double spend - so you have 1 einsteinium or whatever, you put it in the exchange, you use it to buy bitcoin. You re-spend it at another exchange buying bitcoin. You got twice as much bitcoin as you paid for. As long as you're out before it becomes obvious what you've done you make profit.