Do not start taking out loans against Bitcoin
Anyone who is doing this is either plain stupid, optimistic to the point of being an idiot or desperate.
Don't ever lend in bitcoin directly, as you can see volatility of btc is so great that you could be forced to repay 50% more than sum your initial loan was!
Trouble is that I see this a lot, suggestions on these forums to start taking out lines of credit and loans simply to "invest" in bitcoin in the hopes that you can make a quick buck off of what is ultimately a bubble. Trying to time the market like that is such an easy way to lose thousands of dollars.
As was previously said, those people are idiots. I don't hope that the price stays low to keep idiots from making idiotic decisions though.
Every bubble has resulted in a higher base the next time around. People hate it when the price is low and stagnant, but when it rises quickly they complain too! There have been plenty of flash crashes, a bubble is just the opposite, but with more greed involved. I have been holding for some time and am happy that I am in paper (electronic) profit now. If we have a bubble I will probably sell at a high price ($1500+), possibly exchanging for gold. We will see what happens, but I find it fascinating, it's great to wake up and want to check the price for once!