IQ Elite is the #1 social matchmaking site worldwide.
It already profitable and will have 5 million members in June 2013.
It started out as a platform for Mensa Members (people with an IQ of over 130) but later opend up to do matchmaking for anybody, thought IQ is still an important part in matching.
The matchmaking is based on:
2. user preferences
4. personality test
5. IQ test