Like I said before, people are just buying into alt-coins at them moment hoping they will follow in Bitcoins footsteps. Imagine taking $100 and buying $10 worth of coins from each of the cheap coins, if only one of them gains like Ripple did you would make a pretty decent profit. And most of the people don't even know what most of the coins benefits are over other coins, they just buy random ones haha.... Like playing the Lottery!