I had a friend whom I warned that shorting bitcoin at this point in time will be a very unwise move because the price action has been stimulated to the positive side. He didn't listen, and he still shorted bitcoin like hell and constantly bugs me asking for affirmation re: bitcoin's price going down. He lost $3000 just this day due to not looking at market conditions and not checking other traders' sentiments before he decide to make his own plans. He's only trading for 5 months and he's learned a somewhat expensive lesson.
At this point, I wouldn't bet against bitcoin getting some appreciation in price. We've been in the reds for over 2 weeks now and the market is just asking to get some greens for a short time.