Self Diagnosis on the Internet

Since I have a few friends and family that use websites such as WebMd to self diagnosis problems they think they have. After reading an article Why You Shouldn't Try Self Diagnosis: Using the Internet to Determine Health Problems on "associatedcontent.com," I learned that attempting to determine ones own health problems can be more detrimental to people than we may consider it.
http://www.associatedcontent.com/article/197947/why_you_shouldnt_try_selfdiagnosis_pg2.html?cat=5
The article talks about how not all websites are run by board certified physicians, and therefore anyone could telling you that you have a headache when you could potentially have a neurological problem.
The article mentions that sometimes with self diagnosis with the Internet can lead to panic. Someone could be suffering from something as simple as a head cold but the Internet may tell them that they have something more severe which would cause a person to panic. This is something that could easily be avoided with a routine doctors visit.
Also, some websites may have the best intentions in mind but they are trying to push certain drugs. Pharmaceutical companies want their products promoted so even though their product may not be the best you may find yourself purchasing it with little improvement.
The website recommends that if you are going to self diagnosis yourself that you use the information along with a future doctors appointment. Even if the information could be legitimate, taking the further step of seeing a doctor is always the right thing to do. Self diagnosis should not replace a doctor.
Even though the Internet is a great tool for information it should not replace the traditional medical practices that have been around forever. Always remember that you never know who you are going to be getting your information from.