TORONTO SUN - Apr 29 - Between 2007 and 2012 the online dating industry more than doubled its revenue, going from $900M to $1.9 billion annually, and had a jump in visitors from 20M to 40M a year. But it's not just dating sites matching mates; it's social media too. A British survey found 72% of respondents used both dating sites and social networks to search for love, while 19% used social media sites alone.