eHarmony is a 17++++ years old obsolete site. The success rate of eHarmony is less than 10%.
eHarmony is only supported by a big marketing budget and not by serious scientific evidence.
The Big Five normative test used by eHarmony and its copycats, had been proven/revealed as an incomplete and incorrect model to assess/measure personality of persons.
Now it is a HOAX, a FRAUD to use it (year 2017) The same for eDarling and EliteSingles sites!
Spark Networks (LOV) Investor Presentation - Slideshow 7 DEC 2017 (Affinitas, EliteSingles)
Very easy to copycat eHarmony, but very difficult to innovate: a 100 times better algorithm than eHarmony.
ElevatedCareers by eHarmony CLOSED, SOLD and REOPEN again.
Please read: The 8 tips to innovate in the Online Dating Industry!