moving off of Ghost to an astro blog b/c I don't write often enough to justify a $110/year fee and I also found out there's no way to moderate spam comments.
To do the same, move your blog to the free plan on digitalpress.blog (a Ghost hosting provider). Then use the Ghost JavaScript SDK to pull content and build a static site with Astro. You can write posts in the Ghost editor and publish them seamlessly with Astro.
