eHarmony was copycatted in several countries like
the online dating sites EliteSingles 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. and Marrily in India.
Very easy to copycat eHarmony, but very difficult to innovate: a 100 times better algorithm than eHarmony.