This article is for real? Am I missing something? Sure, people want a diagnosis and other services from an unregulated, anonymous doctor with a reputation built by what? Amazon-like reviews? Come on!
That's not like that at all. As far as I understand all answers doctors give are open to the public on the site, so everyone else on the internet, including other doctors, can read them and say if it's a good answer or a bad answer. I imagine if this sites starts issuing bad advice, no one would want to go there. However, as of right now, it appears you are wrong and answers are getting paid for by willing customers.…
"Imagine a future where renegade doctors shun licensing laws and practice medicine over the internet. They build up a reputation around an anonymous identity. Use public key cryptography to sign their diagnosis, reassuring the patient that it really came from them. It’s not hard to imagine this would create a demand for anonymous accreditation agencies. These agencies could issue exams and then use their digital signature to sign the credentials of doctors who pass the exam. Patients pay for these services in anonymous currency ― Bitcoin ― and pay fraction of the price they would pay to the government enforced monopoly."