Public

Everyone will be able to see your Blog Entry.

Diary (Private)

Only you will be able to see your Blog Entry.

Friends

Only your Friends will be able to see your Blog Entry.

Favorites List

Only the Users on your "Favorites" List will be able to see your Blog Entry.

Link-only

Only People who know the Link to your Blog entry will be able to see it. It won't be listed on blog.spacehey.com, in the App, on the category pages, nor your blog page.