Comparing the 2011 crash to now, I think within there is a chance that within 1 week, BTC will "crash" from $240 down to around $130.
I say "I think there is a chance" because it's naive to conclusively say the market will repeat itself. There's so many other factors to take into account.
The evidence for this chance:
Graph of past 2 months
http://bitcoincharts.com/charts/mtgoxUSD#rg60zczsg2013-02-10zeg2013-04-10ztgSzm1g10zm2g25zv
Graph of past 2 months leading up to 2011 crash
http://bitcoincharts.com/charts/mtgoxUSD#czsg2011-04-8zeg2011-06-8ztgSzm1g10zm2g25zv
load them in separate tabs, toggle between the 2.
You notice 2 - 3 small peaks in about the same place, and a pretty similar growth pattern. 2011 had a noticeable peak at $10, went up to $30 and then down to around $15 before sinking lower (made worse by hacks at the time.)
I wouldn't be surprised if it just carried on rising though - after all there's no similarity in relative trade volume. If it did crash, I have faith it would recover in the long run.
Any thoughts?