Wordpress offers both free and paid versions. I tried the free version and was not impressed. They are not as generous as Google Blogger. The paid version of WordPress is a blog publishing system written in PHP and backed by a MySQL database. The free version is very limited and does not attract me. Many says Wordpress has better and features, but that must be referring to the paid version. To use that you MUST host the blog yourself. However, business blogs may be attracted by the better features and may then opt for Business Website Hosting.