What you see is called an "Island top" and its common when a stock gaps. On this chart eletronic arts traded sideways after the gap until the 27th of november until it turned downward.
what you see on those charts also happens with low volume stocks, where someone bought a ton of stock..shot up 10+ points, then was dead in the water. avoid those kind.
When you see that pattern, gotta think...they're being bought out. When the price kind of fizzles into pennies a day they've usually agreed to some form of merger/aquisition.