How to copycat eHarmony, 13+ years old obsolete site.

As an Indian company plans to copycat eHarmony online dating site, in different languages: here is a brief post on how to copycat eHarmony, 13+ years old obsolete site.
eHarmony was previously copycatted by TeAmoRu, eSynchrony and others.

eHarmony has 2 bogus patents about its Compatibility Matching Algorithm, none of them explains in detail the actual Compatibility Matching Algorithm in use in their sites.

Patent No. US 6,735,568 B1: Method and System for Identifying People Who are Likely to Have a Successful Relationship [eHarmony for singles]

Patent No. US 7,454,357 B2: Method and System for Identifying People Who are Likely to Have a Successful Relationshi. This application is continuation of Patent No. US 6,735,568 B1, to include “eHarmony Marriage, which provides advice and tools in a private, personalized program”
[eHarmony for singles and for married persons]

eHarmony, a 13+ years old obsolete site, uses a Compatibility Matching Algorithm based on personality similarity with the Big5 normative personality test and Dyadic Adjustment Scale (invented by Dr. Graham B. Spanier in 1976) as its core. The Guided Communication Process (a mutual filtering step) is an appendix of its main matching algorithm.

eHarmony's Compatibility Matching Algorithm consists of 2 stages.
* A mutual filtering stage common to any online dating site like PlentyOfFish, Match, Chemistry, True, PerfectMatch, Parship, MeeticAffinity, OkCupid, Be2, FriendScout24, etc.
* The core stage.

The mutual filtering stage includes your race, age range, physical appearance, income, religion, leisure activities and sports, skills, location, drinking and smoking habits, likes & dislikes, if you want children or if you have children under 18 living with you, pets, etc. and the same items you will desire in any prospective partner.

The core stage of eHarmony's Compatibility Matching Algorithm:
1) The normative Big5 test to assess personality (The Big 5 is good for guidance/orientation purposes but not good enough for predictive purposes)
2) Dyadic Adjustment Scale (invented in 1976) to calculate compatibility (similarity) between prospective mates.
3) The Guided Communication Process (a mutual filtering step) designed to narrow even more the field of persons you give a better chance of getting along with, and also it is useful for feedback purposes.

eHarmony is not "scientifically proven" because eHarmony Labs had never proven eHarmony's matching algorithm can match prospective partners who will have more stable and satisfying relationships -and very low divorce rates- than couples matched by chance, astrological destiny, personal preferences, searching on one's own, or other technique as the control group in a peer reviewed Scientific Paper for the majority (over 90%) of eHarmony's members.
Moreover the entire Online Dating Industry for serious daters in 1st World Countries is a HOAX, performing as a Big Online Casino, with a low effectiveness/efficiency level of their matching algorithms (less than 10%), in the same range as searching by your own.

eHarmony failed its  IPO last 2011, 2010, er ... even 2008?

Now eHarmony's revenue is in the range of USD180 Million.
But with less than USD10 Million you can
 copycat eHarmony like TeAmoRu, eSynchrony and others.
or
 innovate and revolutionize the Online Dating Industry, killing eHarmony forever.