Since you brought it up, I'll go ahead and cover it for everyone.
FOR FACEBOOK ALBUMS
As long as you have set the album to public, anyone who has a Facebook account will be able to view and request tags on the albums. They will not be able to comment unless they have friended you or had a tag approved on the photo if they are not your friend. It is highly encouraged to upload a duplicate album at another site for those who do not have a Facebook account.