Just try to see Polo order book, and found something weird (for me).

http://s33.postimg.org/d8n8bigwv/Screenshot_9.jpg

Belive me or not, those BIG Volume always moving.
The first time i found it at 0.025, then when price down, it moves to 0.024, then moves again to 0.032

http://s33.postimg.org/gx618dov3/Screenshot_2.jpg

For me, that looks fishy.