This simply includes/excludes blog from "blog lists" only right ?

It doesnt do anything else such as making any content inaccessible to visitors or search engines right ?

The thing is, i have some blogs that are focused on SEO and not very user friendly.I simply want to make them invisible to the eye only.Bots and users with links should still be able to access to the content.

So i guess i am fine right ? Just wanted to make sure.