Looking to settle down harmoniously? eharmony.com (doing business as eHarmony) is an online service that attempts to match singles looking for long-term relationships. It focuses on helping clients find their "soul mate" through its patented its "Compatibility Matching System," which involves users completing a detailed questionnaire emphasizing compatibility and communication. eHarmony counts about 30 million registered users. The company has operations in Australia, Brazil, Canada, and the US, as well as throughout Europe. It also publishes a network of wedding planning and parenting websites. eHarmony was founded in 2000 by Dr. Neil Clark Warren, an evangelical Christian and clinical psychologist.