A lot of the content on this site is to show examples of what can be achieved for small businesses and start-ups without a site. Keeping things simple is key to being able to manage the site yourself. This avoids relying on expert help on an ongoing basis, thereby keeping costs to a minimum as you develop and grow your business.
Blogs can be very useful to show News, explaining what is new, and generally keeping content of a website fresh and relevant.
The ones here are just examples to show an example layout in the footer of the page.