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Lots of legal action against dating sites, both current and historical. Even Spark Networks is suing other dating sites? The concept of profiles, searching for people and emailing those people is like breathing air, plenty of prior art out there. Recent dating industry lawsuits: eHarmony (3 patent lawsuits since April), Humor Rainbow, Inc.(OKCupid), Match.com, LLC, Matrima, Inc., Plentyoffish Media, Inc, Spark Networks and many other sites have been or could be spending time in courtrooms.