Is it possible to disable comments on a blog and/or close a comment thread that's begun on a blog post?

Hi @Aliza Rosen , yes you can do that. Just "edit" the blog post and disable comments (you should see that on the right side).

Thanks, @Rosemary ONeill . So it has to be done on each individual blog, right? There's no setting to disable it across all blogs?

Right @Aliza Rosen the ability to comment on blogs is enabled/disabled per blog post right now. However, a workaround would be to use CSS to suppress the comment box, etc. on blogs. If you need help with that, just let me know!