And the volume is very suspicious...
How can you have 150 BTC on Polo and 5-10 BTC on Mintpal?
It's just not possible unless whales are gaming the Polo book...
And Polo has gone all-in on CN coins so is that volume real?

Don't be intentionally ignorant (or trolling). I demonstrated earlier in this thread with actual data that volume concentration on one exchange is normal and other coins have more concentration. Also hitbtc has decent xmr volume or did at one point.