Using a Static Site Generators like Hexo gives a developer a very fast blogging workflow, using familiar tools and giving the ability to write offline. Content is written in markdown, keeping it portable between any blog generators and making it easy to version in Git. You can also use Git to deploy your site quickly, even over slow networks.
Static sites can be hosted anywhere and are fast to serve and easy to cache. For example, Github Pages offers a very fast way to host your site.
Lets take a look at Hexo, my favourite static site generator.