I wouldn't touch them with a 10 foot pole right now. If I were ever to speculate on them, I'd wait until after the current boom+bust and everyone hating them before dipping my toe in.

Bitcoins really are the digital version of a tulip bulb. They have virtually no intrinsic value, the only market for them is to sell to other speculators. Once the mass exodus sell off starts, it will run them all the way back down to nearly nothing, as there will be tons of sellers and no more speculation buyers.