You should start a blog to answer peoples questions or to be an authority on a subject. Share what you know (or what you and your team knows) because sharing value builds trust and people buy from those that they know and trust.
This guide covers everything you need to know to start and run a blog. It puts you on the inside track to become more helpful than your competitors, and to ultimately outperform them.
But there’s so many blogs! (Accordion?)
The fact that there are so many blogs is to your advantage. Often another blog (or many blogs for that matter) have already written on a topic that you wish to write. This is good! Mine the best posts for their valuable attributes, and identify their not-so-good attributes so that your post can improve in those areas. The ultimate goal is for your post to best and most thoroughly answer a question or be the authority on a subject.