Any lawyers thinking of writing a blog need to read “The Impact Equation: Are You Making Things Happen or Just Making Noise?” by Chris Brogan and Julien Smith. Their big idea: Social media (Facebook, Twitter, blogs) are a means to an end, not an end unto themselves.
Their insightful book talks about how to use these tools. They believe a blog post "must be well written enough or compel with its story enough that it will cause the reader to think a. this is an interesting new voice; b. I’ve been thinking this forever; finally someone is saying it; or c. I’ve never thought about this before!"
Here are three pieces of advice from me. Make sure the post is long enough that readers understand your point (important for a legal blog) but short enough to be engaging. Have a take-home point that readers can use not just a throwaway conclusion. And try to provide inspiration on the small things.
So, don't write a blog just to say you are doing one and scratch it off your to-do list. Write with the intent of helping others and providing value. And write the blog that you would like to read. Good posting.