This isn't a 'crash', but merely a correction, another correction, to the mean.
See this, and realize this wild and crazy marketplace full of amatuer traders and fear based panic sell-off's is the norm. Not the exception.
Expect this to continue.
Buckle up, brace for it, relax, sleep tight. And don't panic sell low only to have to rebuy later at a higher price again and again!
RE: Log Chart - key word = logarithmic (log)
http://www.bitcoincharts.com/charts/mtgoxUSD#rg1460ztgTzm1g10zm2g25zi1gVolzi2gRSIzi3gAccDistzi4gMomentumzland for a live chart worthy of mentioning:
http://bitcoinwisdom.com/markets/bitstamp/btcusd It's not a "Crash". But of course the shills and amateurs both will say just that.
Heck, now is a great time to Buy again. Not Sell! In fact as the dust settles that is exactly what will resume and at a much better price thus tempting hordes more to come rushing in like fools always do (without doing any due diligence).
Caveat emptor - let the buyer beware!