BizSugar.com › Social Media › The Beginning of the End for Facebook?

Last year, September's average minutes per user for Facebook was 287, a 42% increase. During the month of September this year, Facebook commanded 14.7% of total U.S. consumer Internet usage minutes, the most of any website. Given that the site is still on a growth trend, how can I be crazy enough to ask if it's the beginning of the end for Facebook?