The potential hasn't changed... That is why I'm asking.  Why are people investing even more as the price rises?  There's no real determining factor?

I realize that this comes off as fud, and it sort of is.  But I honestly want to know what makes these things tick to know what to look for in future investments.  There was no new news, no new announcements, nothing changed as far as I can tell.  Why did this explode?