When a user signs up to eHarmony they fill out a lengthy questionnaire about the type of person they are, their likes and dislikes, beliefs, values and preferences in potential partners.

The information is fed into the company’s closely guarded, secret algorithm, which serves up the most compatible matches in its user base.

The matching algorithm is based on data collected from interview with more than 50,000 married couples in 23 different countries, from which the company has derived a mathematical model of a successful relationship it says

�So, I found you the most compatible person on the planet. (more…)