Many online dating sites use different methods to match up their members. The simple approach, used by leading sites like match.com, requires members to fill out a lengthy profile, which is then matched against other profiles that have a high match percentage. The member is given the opportunity to indicate the importance of each attribute. The dating site will then use the weighted attributes to further refine the matching process. Other sites, such as eharmony.com, use complex mathematical equations and a more scientific approach to match their members. For instance, the method used by eharmony.com includes a 29-step personality and compatibility survey. While both the scientific and matching-by-attribute approaches claim success, neither one is a perfect system.
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