I have my suspicions about Bittrex and their obvious use of bots to manipulate the books on every coin they list. I don't have proof, but it becomes quite apparent when you sit down and watch the books for any coin on Bittrex (and other exchanges) that the weird small trades like 0.00001 BTC are not human trades.

Having said that, the bots on Steemit are getting out of control, maybe we should start with cleaning this place up and then move on to the bigger challenges.