We should have a big virtual party when bitcoin hits $100. BTW, this is probably not a bubble. The 2011 bubble happened because media reports created a boom of interest that quickly died. It can be quantified by the USD exchange trade volume: https://blockchain.info/charts/trade-volume?timespan=all The trade volume is much higher now, and has been for a longer sustained period of time, so you would expect the price to be higher. The important point is whether this interest in bitcoin will disappear, like it did last time (that would cause a crash as people cash out). I don't think it will. This is a different time and environment. A lot more legit businesses are accepting bitcoin and many more people believe in it as a "real" currency.