A weblog is an essential marketing tool for your business. It is ideal to attract customers and search engines likewise. A blog is easy to install and doesn't need a lot of maintenance.
Blogs are ideal for small businesses, non-profit organizations etc. They can also be a great visitor magnet for companies as an addition the the main website.
I am familiar with the intricacies of WordPress plugin and theme development and have published a variety of plugins which have been downloaded hundreds of thousands of times.