2019 Singles & Desirability Study by eHarmony

https://www.eharmony.com/desirability-study

Mothering Sunday in UK 31st of March, via eHarmony UK
https://onlinedatingsoundbarrier.blogspot.com/2019/03/mothering-sunday-in-uk-31st-of-march.html

Old data about eHarmony Japan big failure. Remember?
https://onlinedatingsoundbarrier.blogspot.com/2016/05/old-data-about-eharmony-japan-big.html

Very easy to copycat eHarmony, but very difficult to innovate: a 100 times better algorithm than eHarmony.
http://onlinedatingsoundbarrier.blogspot.com.ar/2016/10/very-easy-to-copycat-eharmony-but-very.html 

The Online Dating Industry is selling elixirs, tonics, snake oil liniments and other patent medicine and performing like the Pharmaceutical and Cosmetic Industry before the USA Food and Drug Administration was created where any player can make any claim without any credentials. 
eHarmony is ONLY a 19  years old obsolete site and a HOAX, based on a big scientific fraud, only sustained by big marketing budget.
The Big Five normative test used by eHarmony, had been proven/revealed as an incomplete and incorrect model to assess/measure personality of persons. It is a HOAX, a FRAUD to use the Big Five normative test in year 2019. 

eHarmony was copycatted in several countries like
the online dating sites EliteSingles / SilverSingles in Canada, Australia, USA, UK, Chile, Mexico; eDarling in Spain, German, France, Russia;
also TeAmo in Russia is another copycat of eHarmony;
esync (eSynchrony) in Singapore,
MiMediaManzana in Colombia, Peru, Mexico, Chile, etc.,
Marrily in India
and
LemonSwan in Germany and other countries.

Contradictory information from eHarmony and PROOF of FRAUD from the papers they had published using the OBSOLETE NORMATIVE PERSONALITY TEST BIG FIVE.
BIG FIVE NORMATIVE TEST WAS REVEALED AS INCORRECT AND INCOMPLETE MODEL OF PERSONALITY !!!
http://onlinedatingsoundbarrier.blogspot.com.ar/2017/08/contradictory-information-from-eharmony.html
More fraud from eHarmony UK talking about "Future of Dating 2018"
https://onlinedatingsoundbarrier.blogspot.com/2018/12/more-fraud-from-eharmony-uk-talking.html

Online Dating sites have very big databases, in the range of 20,000,000 (twenty million) profiles, so the Big Five model or the HEXACO model are not enough for predictive purposes. That is why I suggest the 16PF6 test instead and another method to calculate similarity.

The key to long-lasting romance: COMPATIBILITY is exactly STRICT PERSONALITY SIMILARITY and not "meet other people with similar interests or political views".  

High precision in matching algorithms is precisely the key to open the door and leave the infancy of compatibility testing.
Without offering the NORMATIVE 16PF6 (or similar test measuring exactly the 16 personality factors) for serious dating, it will be impossible to innovate and revolutionize the Online Dating Industry.