Increasingly, people want experts on their case. They want to know they are in safe hands. If you can prove this by developing credibility through a blog which demonstrates your expertise as well as your personality, you'll show yourself to be reliable and trustworthy. 

When someone finds your website, it's generally because they're looking for an answer (or answers) to the questions they have. 

The secret to a successful law firm blog is for it to educate and engage the public, for it to start a conversation and inspire readers to consider their opinion on the topic. 

Pro-tip: If you read your blog post and get bored half way through, it's boring. There's no way around it. Even the most dull topics can be presented in an engaging way.