I don't think we've seen the end of the correction that began today.  I'm confident we'll go below $100 before we reach $200 again.  Though I don't see it getting anywhere like as low as $50. More like the $80 mark, and not for long.

Once all the media decides that they're bored of bitcoin the value will take a significant hit. Personally I don't see it dropping too much below 50% of its value at the time, but it can't sustain being worth 100 with current hashpower/transaction combo. It's not used enough yet. I wouldn't pay more than $60 for one right now. They're just not worth it. If the media stops covering that's a lot less people paying attention. Which means a lot less value. Long term it could very easily go up to $1000+. But near term I see probably a peak of about 150, the media losing interest, and it dropping down to 60-75 range.