I doubled my position at these levels. The way I see it is that most of 400 BTC worth of BC was traded at levels 1500-3000, and price drops were usually with low volume. Calculated risk is not a gamble, and with price*volume taken in consideration there is much more room for this to rise, than to drop. Owners will just not sell a significant volume at these levels. That said I'm all in and ain't getting out at anywhere near these low levels, and not anytime soon. This is one of my long term investments.