Re: [ANN] Bittrex / Poloniex / Cryptsy All Coin Trading Software, Quatloo Trader.
Ping pong is the best part of it. There is always a difference between the buy price and the sell price. You basically put a buy order up, someone sells into it. Then it will put a sell up, then someone buys into it. It's free money lol I have no idea why you wouldn't think this is like totally amazing 
well you must be a lucky guy if ping pong is free money for you.
the way you described - yes i agree. but there's another scenario that can happen: you put a buy order --> someone sells to it --> next cycle the trader puts another buy-order up but unfortunatelly in this cycle your sell-order didn't get filled --> someone sells to it --> next cycle the trader puts another buy-order up but unfortunatelly in this cycle your sell-order didn't get filled --> someone sells to it......and so on.
"free money" is something different :-)