Physicians, healthcare executives, pharmaceutical companies and others have been slow to jump on the blogging bandwagon. The primary reason is because they have a negative opinion of blogs. Some believe that blogs are filled with inaccurate information and cannot drive sales of healthcare products and services.

In some respects, this negative perception of blogs is justified. This is because blogs are far from a perfect communications medium. Some of the reasons for this include:

- It Is Difficult To Vet Blog Content: Currently, there is no standard set of criteria people can use to determine whether a blog is credible

- There Are No Metrics: There is a lot of anecdotal evidence indicating that blogs may impact a company