Surely the best place to find medical information is via your GP / doctor, not Google?
http://losangeles.cbslocal.com/2011/11/10/study-nearly-half-...
What if you don't have a regular doctor, because you haven't seen one in a while and just got your first real job? Well, you have to wait to establish a doctor/patient relationship before you get any advice.
Plus, have you ever actually tried to get a medical question answered without an appointment? They say to check with a doctor before taking tylenol, but realistically ... no.
In many cases, yes, an online diagnostic is going to be much faster and about as accurate as the doctor.
I'm sure this happens.
You do realize tens and tens of millions of people don't have GP's right?