If a currency can fall 8.5% in a day on no real bad news such as today just proves the cronies and knockers correct when they say its too risky and volatile. Imagine if there was actually some bad news, sheesh.
You are assuming that people in general are pushing this down, your wrong. It was a flash crash on bitfinex.com caused by deliberate manipulation, absolutely nothing to do with public sentiment or news.
Manipulation? It's disheartening to learn someone can hack into the exchanges and sell all the bitcoins, thats what I call bad sentiment!