No telling why..

You could have a penny stock company worth $50,000,000 with only 2.5 million shares outstanding lose half its value in a matter of days, for no reason other than pure speculation.

 This is a cryptocurrency and is only backed by the good graces of the people that hold the currency, not a company with hard assets. If people think it is worth more than the current price, it will go back up. If people think it is worth less than the current price, it will continue to go down.

The main thing to remember is, the market is always right, even if people think it is wrong.

There is nothing to prevent Devcoin from being in the $0.01 to $0.05 range in the future as long as the Devcoin economy grows...

Worrying about the daily up and down prices will only give you an ulcer.

As a side note Dogecoin has a trading volume that microcap companies dream of. I just checked on Crypsy and the Volume for DOGE/BTC is 571 BTC  (roughly $450,000) and DODE/LTC is 1833 LTC (roughly $40,000)... Egads Man!!!!