Now more than ever, anyone with a website should incorporate some form of a blog. This regular communication not only keeps your website fresh, but it goes a long way in establishing your credibility.
Look at blogging from the reader's (blogee's?) perspective for a moment. When he can view a blog that is consistently and faithfully updated, it suggests a foundation of permanence. You were here yesterday, you are here today, and odds are you will be here tomorrow when I log in.