According to Digiconomist/BitCoinEnergyConsumption.com, and if you believe energy usage as a proxy for currency popularity is acceptable, then the answer appears to be no:
The downward spike was on March 18, and I haven’t any good guesses why that would have occurred; the recovery appears to suggest Bitcoin is still chugging along. Another proxy is, of course, the value of a bitcoin in US dollars, which BuyBitCoinWorldWide provides in a time series:
It appears more or less healthy so far, doesn’t it?
