The Markets proved to be more pragmatic than regular people or news commentators, and the hype generated by Facebook's listing cooled down in hours. Being a famous brand is one thing, having a high stock value is another.
Facebook shares lost 29.28% in value compared to their IPO price in only 18 days, and the trend is still bearish. Those who sold their Facebook shares at the grand opening can consider themselves lucky, because they can now buy them back at 70% of the price. But are they going to buy them back? Right now, it seems that the market will stay bearish for a while, and PUT options are more likely to yield profits. However, if you think that the trend is going to reverse, you can buy CALL options and try to swim against the trend.