I get an alert on my iPhone whenever you make a trade. It tells me to sell when you are buying, and buy when you are selling. So far it has paid off handsomely! I pay a lot of money for that alert, but it is worth it, believe me, and I suspect most hedge funds are paying for that same alert :)
People are taking profits. The hype is cooling down. I won't worry about this. It will go back up again with all the great news coming --- possible China Mobile deal, new lines of products, etc. Also remember trading is not as easy as you think. Timing is very important.