The simple and quick answer is YES. I’ll tell you why.
Even though there are some sites high on search engines that has not much content but those sites has something that you probably don’t. Maybe a well-known brand. You probably need content.
Blogs are not the magic tool that will guarantee you high rankings. They however will add a keyword rich content to your website that is always growing. Search engines do tend to like sites that are updated regularly with new content.
Newsletters, press releases, forum entries archived in your site can provide a similar benefit.
Your blog posts will most likely show up in blog search results on Google or Technorati.
If you need help with setting up your blogs please CONTACT ME