Some data about Online Dating sites via SurveyMonkey Intelligence June 2016

https://www.surveymonkey.com/business/intelligence/dating-apps/
http://priceonomics.com/the-sausage-index-which-dating-apps-have-the-most/

Suggested USA FTC investigate several online dating sites for misleading statements, false claims, overpromises.
http://onlinedatingsoundbarrier.blogspot.com.ar/2016/05/suggested-usa-ftc-investigate-several.html

Suggested USA FTC investigate ElevatedCareers by eHarmony for misleading statements, false claims, overpromises.
http://onlinedatingsoundbarrier.blogspot.com.ar/2016/05/suggested-usa-ftc-investigate.html

Suggested USA FTC investigate Instant Chemistry Inc. and Gemetrics for SCIENTIFIC FRAUD, misleading statements, false claims, overpromises.
http://onlinedatingsoundbarrier.blogspot.com.ar/2016/05/suggested-usa-ftc-investigate-instant.html

The innovations the Online Dating Industry needs will come from only one source: the latest discoveries in theories of romantic relationships development with commitment.  
Please remember:
The 3 milestone discoveries of the 2001 - 2010 decade for Theories of Romantic Relationships Development are:
I) Several studies showing contraceptive pills users make different mate choices, on average, compared to non-users. "Only short-term but not long-term partner preferences tend to vary with the menstrual cycle"
II) People often report partner preferences that are not compatible with their choices in real life. (Behavioural recommender systems or other system that learns your preferences are useless)
III) What is important in attracting people to one another may not be important in making couples happy. Compatibility is all about a high level on personality similarity between prospective mates for long term mating with commitment.

 The key to long-lasting romance is STRICT PERSONALITY SIMILARITY, and not "meet other people with similar interests" 


Please see also:
2017 INTERNET TRENDS 2017 Next Big Thing: PERSONALIZATION!
http://onlinedatingsoundbarrier.blogspot.com.ar/2016/06/2017-internet-trends-2017-next-big.html

The next wave of innovation!
http://onlinedatingsoundbarrier.blogspot.com.ar/2013/06/the-next-wave-of-innovation.html

What comes after the Social Networking wave?
The Next Big Investment Opportunity on the Internet will be .... Personalization!
Personality Based Recommender Systems and Strict Personality Based Compatibility Matching Engines for serious Online Dating with the normative 16PF5 personality test.
Without offering the NORMATIVE16PF5 (or similar test measuring exactly the 16 personality factors) for serious dating, it will be impossible to innovate and revolutionize the Online Dating Industry.  All other proposals are NOISE and perform as placebo.