Is a great idea! But it is not a DAC and could be done with any crypto currency that is not associated with the platform....
Of course it's not a DAC yet, because it hasn't been made yet. Saying it's not a DAC is like saying the only thing which can be a DAC is currency. Just because it's not a DAC yet doesn't mean it wouldn't be better for us if we had such a DAC.
Think of AskADoctor as a decentralized information service which utilizes the free market to produce the highest quality information. The current centralized versions of these ideas, how exactly are doctors paid? Where is your information stored and how easily is it stolen? Who owns the business? How autonomous is it?
My guess is that either doctors aren't being paid at all or they are paid behind the scenes by the users. They probably aren't paid in Bitcoin or any cryptocurrency which means you wont be able to use cryptocurrency to pay them (which reduces your flexibility greatly). The market probably doesn't determine how much doctors get paid so what exactly determines that true value of the information being offered?
And those centralized sites might or might not scale but lets assume they do scale up, then why would we want to not turn it into a DAC so it can scale up in a decentralized fashion?
In a DAC you can for example use market incentives to encourage Doctors to give honest answers to popular questions. You can use a blockchain technology to store reputation and transaction history.
Assume it's 3 years from now and we have decentralized peer to peer healthcare and insurance. Let's also assume we have sensors connected to us now which can monitor our health, we have plenty of information being collected, but we want to ask a question to the blockchain itself and attach a reward for whomever answers it? I think we should be able to do this and I don't think the centralized way has any advantages.
Doctors and patients can set it up on their end to accept questions at a certain price or perhaps even create a market around that. The fact is we need to decentralize it and bring the free market into it. In the long term picture if AI becomes a big thing then perhaps the blockchain itself might be able to diagnose you.
Overall healthcare itself is extremely inefficient and I think stuff like this can make it much more efficient. I also don't see a reason to have a centralized website when we would have DomainShares, MaidSafe, Ethereum and all that.http://www.qmed.com/news/ibms-watson-could-diagnose-cancer-better-doctorshttp://www-03.ibm.com/innovation/ca/en/watson/watson_in_healthcare.shtml