Pimp your friends

People are free-riding online dating! For those of you unfamiliar with the term, this means exactly what you think it means, mooching. I have now twice had my email address forwarded to a friend of someone who is paying for the service (with my permission). Does this make online dating a public good? I shudder to think of the implications if that’s true. I find it hard to believe online dating is underprovided in the market.