Seems pump-and-dump attempt.

More interesting thing is a 170K mmc wall at 3600...
I don't see the wall on Polo - maybe it's already gone.
When you say "wall", you mean that, at 3,600, 170K of MMC will be sold thus pushing down the price, correct?
Is it possible to have a "fake wall" if one does not own 170K of the MMC?
Somebody set sell order of 170K mmc at 0.00003600 BTC. Now it's 66K mmc at 0.0003700
And no, you can't set a "fake wall", because you have to hold the coins in your exchange wallet to trade them.