As I tell my business acquaintences who are unfamiliar with blogging what a business blog is, I have found myself searching for good descriptions. A good resource is from Darryl Zahorsky on "What A Blog Can Do For Your Small Business". There are numerous helpful links here including business blog resources for those of you who want to to know more.
I'm convinced that a simple, updated business blog could be used to discuss new offerings, promotions, showcase clients (or how your service/products solved a business problem for them) - so online referrals and references. The sky is the limit.