Writing is a blog for business is a trend for two reasons. First, people want information. If your business has a blog and the blog has useful information about what consumers are looking for, visitors will come back frequently for more information. For instance, if you sell computer software and explain how to install and use it, people will find the information on the blog helpful, so they will come back for more info on that subject. Second is for SEO. Nowadays, Google is very important. Everybody googles information. If you have some information on your blog and people like the info, people will link your blog to where they go to. More inbound link you get from other people, you are more likely to get higher rank on Google. In the end, you will get more traffic and higher conversion rates.