I think Wolfram Community is a great medium to share your blogs. A lot of advantages:
- Reach medium for formatting (ultimately headed for Cloud Notebooks embedment)
- Network w/ one of the highest concentration of people interested in Wolfram Technology
- So you get a chance to share w/ the right folks and get a great feedback
- Great SEO - and web search engines discovery
- Very easy to use posting tools
- Your content can get highlighted in Staff Picks editorial column: http://wolfr.am/StaffPicks
- Your profile then will become a badged as featured contributor and list all your Staff Picks - for instance: Marco Thiel
You can also simply use Wolfram Cloud to deploy your blog as a notebook.
If you set your mind on external hosting take a look at:
- Making a Blog in 30 Minutes from Mathematica Notebooks
- GitHub - paul-jean/blog-this: WordPress blogging client for Mathematica · GitHub
There were a lot of other various discussions on this subject before but outdated ones might have been removed.