Blogging software should meet four important criteria:
1) Easy import from a pre-existing piece of blogging software we’re not happy with.
2) Spam filtering protection in comments
4) Should make it easy to not look like Mephisto blogging software or WordPress or like generic blogging software.
Mephisto meets all four criteria.
Plus it leverages the advantages of Rails in that out of the box you can deploy to development, test and production environments. Also it integrates with no mess into shopify or any other Rails project that you might be working.