Discussions

I've often found myself searching online, on websites such as Yahoo! Health for answers when it comes to medical ailments.  
 
I tend to do this quite a bit, before consulting a doctor, as making time for the walk-in or an appointment with your family doctor can sometimes be a hassle.  
 
I'm pretty positive I'm not alone in this manner, but I'm curious as to who else tends to investigate and which sites they find to be the most accurate and helpful.  
 
What pros and cons do you see about them, and do you think people tend to rely on them a little too much (i.e., not going to the doctor soon enough when a condition has worsened, or have read false information)?