From Vladimir Savchenko @ compatti.com:
After analyzing the compatibility results of 156,334 unique pairs from over 30,000 Compatti.com users using astrology we found very profound symmetricity in distribution of the compatibility scores. It was hard to ignore consistent and symmetrical distribution of the compatibility results for pairs of users collected from 4 years of operating compatibility evaluation, social networking and dating services http://www.compatti.com.
The research showed that: most of us (over 70% of pairs) are capable of living in harmony with each other. Each of us could be in relationships with an equal number of others at the same level of compatibility. The chances of meeting absolutely incompatible as well as absolutely compatible person are 1 out of 10.
This research is based on the empirical data analysis and clearly justifies our existence as a society with various relationships between us and a desire to live in harmony.
You can get the report here.