Someone seems to have wiped the sell orders on Zapple yesterday and bought at 700, and not just dust amounts! I do not know why that person did that (it was still possible to trade on Poloniex at 100), but if he or someone else can do this again and add a huge buy wall at 600, we could already return to a reasonable price!
Guytp, you are already being rewarded, RIC/BTC is by far the pair with the highest volume!