eHarmony is a specialised online dating site - it claims to use a scientific approach to help singles find a suitable match!  According to eHarmony, matches are found using a formula "developed by the Oxford Institute at Oxford University".

 

The system eHarmony uses means that singles are matched based on compatibility areas such as intellect, sense of humour and values/beliefs rather than the more basic system that most sites employ, where members find matches based on a photo and profile.

 

Some people might be cynical about whether eHarmony's system really is based on science, but the ethos behind the site does seem to be in the right place - the founder made research into what makes a successful long term relationship.  The service is certainly different, but searching for matches is based on exploring matches which are suggested to you based on your profile.  Test the site with a 90 day full free membership!