According to the 90 and 180 day trends the price should be more like 30-40. My guess is that it will eventually come back down once the current hype stops(if it stops).
It is a 2-sided issue. As the value of bitcoins goes up, the profitability of mining also increases and we see more coins in the market
additionally, bitcoins are becoming evermore permenant and recognised. Thuis bubble has not been reported by most of the news sources i watch (ie local, CNN, the globe&mail, etc). A report about its new value could cause far more investors and drive it well past $250 in the short term.
I had 0.323BTc since when it was only $20 a few months ago. today i loaded up 2 more coins at slightly above market price in order to truly have a horse in this race. I can see us flying upwards further, hitting resistance 9lets pretend at $200, selling down to $150 or less as a lower resistance, then running at it again to get to $250 within april