Blog plays an important role in company organization. For example, organizations published corporate blogs to reach its organizational goals online. Due to centralize hosting and organize a structured conversation, corporate blog let employees easily reach and follow the latest posts of their companies and enhance the efficiency of employers’ management. Advertisements usually attached in corporate blogs and it is one of the best ways to promote products and services of the company. In general, there are three types of corporate blogs, internal blogs, external blogs and CEO Blogs.
Although blog bring companies benefit, but it also have some disadvantages. Most of the companies don't want to invest money or invest very few money on their blogs so that corporate blogs become unorganized and unstructured. Companies gain disasters from the bad worded and facturally incorrect blogs. Finally a corporate blogs may misuesed by people to post regular news releases and business information.
Reference:
http://internet.suite101.com/article.cfm/all_about_corporate_blogging
http://en.wikipedia.org/wiki/Corporate_blog