Blogs vs. Traditional Websites

Blogs
Blogs really are a niche website.  They typically display information that has been posted most recently at the top of the page, with progressively older information appearing further down the page.  Advantages of using blogs are that they are easy to create and update, can be edited using simple blog creation Internet applications (e.g. Blogger and Wordpress) and mobile devices, and often require little or no programming skills.

Traditional Websites
Traditional websites can contain more information than blogs, and display that information in easy-to-find locations.  Whereas blogs constantly display new information at the top of the page, traditional websites typically show stagnant information.  While this admittedly sounds boring, it can be very useful for users that are trying to access information that does not change regularly (e.g. contact information).

Summary
Blogs and traditional websites both have a future in web publishing.  They accomplish different tasks.  When used appropriately, they can be very useful.