KEY POINTS
  • As investors, we worry about the amount of revenue Facebook could lose and the increased money it must spend to police and monitor its site.
  • Facebook's stock is now down about 20 percent from its Feb. 1 peak, meaning that the company has lost over $120 billion of market value, three times its annual sales last year.
  • As the Economist points out, the median decline for a stock after a company crisis erupts is 30 percent, and we are 10 percentage points from that level.

The sound of a televised golf tournament travels from another room. It's a late Sunday afternoon in spring, and habits in this house never change. I just heard fragments of a BMW ad, which is no surprise. Targeting is the essence and value of advertising, and golf tournaments deliver a well-defined audience of mostly upscale, male and middle-aged viewers.

Nielsen has been in the business of measuring and identifying TV and radio audiences for nearly 100 years. Beer ads during football games, Transformers ads across Nickelodeon, and Advil ads during 60 Minutes all result from advertisers digging through and analyzing audience data for those programs.