I speak with most clients about the utility of blogging and the relevant SEO value it brings. This is the easiest way to get new content on your website, and it is usually one of the busiest pages on a website -- because people know it gets updated.
There are lots of articles on the best approaches to blogging. I read a number of them to see what's the latest thinking on these topics. This morning I read an interesting checklist for rating your competitor's blog. Click the link below for a methodology to employ from Digital Relevance in comparing your blog to your competition.