Zynga, Inc. (NASDAQ: ZNGA) is definitely one of my best picks for 2013 so far. It has been up for more than 50% since I start giving a "buy" signal for ZNGA. True, ZNGA has been running up too quickly recently. But not to mentioned about a reversal, I even seriously doubt it is going to pullback significantly. RSI reaching oversold level does not necessarily constitute a pullback, it could be a sideway action, or even more buying power. If you are really worried on ZNGA, I suggest you to buy a put option. This way you can have an insured selling price better than a stop order. The benefit is that you can keep ZNGA in your portfolio and let it roll, while don't need to worry on a significant drop.
Other bullish indicators:
1) Golden cross is taking place soon.
2) Bullish MACD crossover is coming
3) Friday's candlestick touches upper Bband, which signals for a continuation on the recent uptrend.
4) MACD Signal line above zero first time since last Sept