You don't have to spend money on creating a blog. All you have to do is to create an account at sites that give you a free blog and start blogging.

Free blogs can help you promote your products and services.

If you write SEO friendly blog posts on a free blog you will be able to get lots of free traffic from search engines... because these sites are search engine friendly right from the get go.

Plus, linking on your free blog gets backlinks for your site....