Wonder whether it will fall as quickly, When there's nothing about potcoin in mainstream media for the next few weeks.

It are this kind of swings and irrational movements of coins which clearly show that many of these altcoins are still in very immature markets, where people are just buying and selling ames based on rumours not knowing what or why they are buying it.
It's unfortunate, for a popping bubble would in the long run be damaging to thecryptocurrencies. It would retard mainstream acceptance by years. (I'm nottalking about what happened yesterday, I'mtalking about a headline:

50% cryptocurrency value lost; Investors see billion$ go up in smoke as the cryptobubble finally bursts, on the front pages of major newspapers)