Not my thing. No actual value, extremely volatile, too "new" and unproven and totally unregulated.
You can make a big profit in a short time period if you time it right, but you can also lose your ass or perhaps even get ripped off.
I've always said tread lightly with it if you insist on getting involved at all with it at this point... and know who you're dealing with.
When I start hearing the richest and smartest investors in the world are looking at it, I may reconsider. Until then, I'll stick to stocks, bonds, commodities, and the odd legit currency play. Have been a little short on yen and euros in the not too distant past. Just bought a little more gold, silver, and crude exposure with those same currencies when I recently bought them back.
I think China will be next to have problems, but it may take a little while.