Lots of volatility in other coins too. Litecoin and Peercoin have experienced big jumps, then big losses. No doubt that other coins that are currently experiencing big surges will shortly, likewise, have the rugs pulled out from underneath their feet. Big money is influencing the market, then shaking ordinary speculative investors out.

I don't have a great deal of START. If I sold now it would be piddling. I'm holding the START I have. It's my ticket to ride. Up, or down. Both. There are reports that the big swings are coming from big money play in China. Simon Dixon (BnkToTheFuture > a Startcoin partner > Bitcoin Capital) is based in Hong Kong. This is STARTing to become very intriguing indeed ...  

Advise caution. As for myself, I'm definitely in for the ride!