...And Facebook's march towards utter market dominance continues unabated. While Twitter enjoys plenty of success, and we're sure someone out there still uses Google+, there's no denying that the king of the social networking hill is Facebook. And during the third quarter of 2014 the company did nothing but extend that lead. In particular the number of mobile users continued to explode at an impressive rate. The average number of monthly mobile users in September was 1.12 billion. (To put that in perspective: Twitter announced just 284 million monthly users across all platforms.) That's 29 percent more than last year. Most impressively many of those users check in every day. The average daily number of mobile users during the quarter was 703 million. And when you take the desktop into account, usage balloons to 864 million per day -- or about 64 percent of its users.