Efficient way of communicating

http://http://www.nytimes.com/2003/07/07/technology/07NECO.html
This article is about a company who did most of their messaging through e-mails until they learned about blogs also known as Web logs. This company feels that by using the blog for communication saves a lot of time and it is a way to share personal wisdom with a larger group. Blogs can be simple which saves time for companies to get responses. In some of the bigger organizations they use blogs only within their organization. Meaning, the outside world does not have access to their information. According to this article it seems as if there are definitely more pros than cons.