the blog owner must agree to the inclusion (this is typically assumed to be the case, since public blog posts are supposed to be shared around. Still, it doesn't hurt to send a short notice about the inclusion to the blog owners)
the blog must either be about foss + android development only, or a foss + android only category must be provided (eg blog.example.com/category/fossdroid/feed).
the blog should preferably be in english.
In order to be included in the planetarium, any planet should:
Be somewhat related to free and open technology.
Please contact @vanitasvitae or open an issue in the bug tracker to be included in the planet.