Some time ago I got the idea to start a dating site based on socionics but it was just one of the many ideas that I didn't want to fulfill at short term. But now I've been thinking about actually making it and I've been investigating.

From somewhat shallow observations, I've noticed a few characteristics about existing sites:

1) That extroverts outnumber introverts by a huge margin, easily an order of magnitude or more.
2) That among typical users Deltas are overrepresented. LSE and IEE are easily 50% or more of the population.
3) That most interactions involve an EJ with an EP, often with frustration for both.
4) IPs are the most common introverts, SEI and IEI being the most common.
3) Types such as LIIs are virtually non-existent.

¿Could it be that extroverts are often more aware of their need for human interaction? In the sense that introverts are usually used to be alone and don't feel the drive to go fishing...