eHarmony is an online dating website grounded in relationship science that matches single men and women for long-term relationships. To optimize the matching process, eHarmony operates eHarmony Labs, a relationship research facility, and publishes eHarmony Advice, a relationship advice site. eHarmony, which was launched on August 22, 1998, is based in Pasadena, California; it has members in more than 150 countries and operations in the United States, Australia, Canada, the United Kingdom, and Brazil. The company is privately-held, with investors that include Technology Crossover Ventures, Sequoia Capital and Fayez Sarofim & Co.