article: The U.S. Current State of Online Dating

http://blogs.wsj.com/speakeasy/2015/02/27/the-current-state-of-online-dating/
http://www.gfk.com/us/news-and-events/press-room/press-releases/pages/us-adults-online-internet-dating.aspx
2.36% of U.S. adults—5.6 million people—reported using online dating sites in the past 30 days. That’s more than double that of five years ago, according to new analysis of survey data from market research company GfK MRI.

Social dating is vaporware.
The Online Dating Industry does not need any improvement. It does need INNOVATIONS!
http://onlinedatingsoundbarrier.blogspot.com.ar/2014/12/global-dating-insights-2014-industry.html
Online Dating for serious daters does not need to be more social, it needs to be more effective/efficient. It needs to reduce the false positives problem.
Please read: The 8 tips to innovate in the Online Dating Industry!
http://onlinedatingsoundbarrier.blogspot.com.ar/2013/12/the-8-tips-to-innovate-in-online-dating.html 
The key to long-lasting romance is STRICT PERSONALITY SIMILARITY and not "meet other people with similar interests".

WorldWide, there are over 5,000 -five thousand- online dating sites
but no one is using the 16PF5 (or similar) to assess personality of its members!
but no one calculates similarity with a quantized pattern comparison method!
but no one can show Compatibility Distribution Curves to each and every of its members!
but no one is scientifically proven!