Investors don't often have the stars line up so well for a position entry, but we don't often see a stock rising rapidly with a forward looking price to earnings ratio over 45. Look to sell the news if Facebook climbs into the press event.
If you're a long-term buy-and-hold investor, this event won't mean much to you either way. But if you're active in allocating your capital, manage your risk with Facebook appropriately.
At the time of publication the author had no position in any of the stocks mentioned.