Every business should have a blog, acording to SubmitEdge.

A well established blog can significantly boost the visibility of your brand. It can even help establish your website as the authority place to go for information! Every business needs a blog, so quit making excuses and just do it.

The SubmitEdge piece gives a long list of things a blog can do for your website and your company's image. It also looks at specific tasks you can complete for your business on a blog – things like announcing a new product or a sales event.

The piece is worth reading.