Tinder claims to have "many" satisfied users in North Korea, which is news to me.

http://mashable.com/2015/08/12/tinder-north-korea/
http://mashable.com/2015/08/12/tinder-robot/

article Tinder and the Dawn of the “Dating Apocalypse”
http://onlinedatingsoundbarrier.blogspot.com.ar/2015/08/article-tinder-and-dawn-of-dating.html

Innovations are not adding more bells and whistles to actual online dating sites.
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 Online Dating Industry does not need a 10% improvement, a 50% improvement or a 100% improvement. It does need "a 100 times better improvement", not 100% better, 100X better, really an INNOVATION.
The Online Dating Industry needs a very powerful algorithm like the "Teller Ulam design". In this case 100 times more powerful than actual matching algorithms.
 

LIFEPROJECT METHOD: 100X better than eHarmony, not 100% better, 100 times better!

http://es.scribd.com/doc/223672375/LPMvEHARMONY-pdf