833 online dating startups at Angel List ?
"online dating" is a broad concept to define a large group of different proposals. http://onlinedatingsoundbarrier.blogspot.com.ar/2014/10/article-does-online-dating-work-lets-be.html
The Online Dating Industry needs Innovations, but the innovations the Online Dating Industry needs will come from only one source: the latest discoveries in theories of romantic relationships development with commitment.
Compatibility is all about a high level on personality similarity between prospective mates for long term mating with commitment.
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"
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.
Proof of FRAUD from eHarmony
Not 100% better, 100 TIMES better