for a world with join and edit on for both guests and friends, guests who come in shouldnt be allowed to delete the world creators creations, but only the very creation that they build themselve’s can be deleted! only a freind should be able to delete the world creators creations and be able to edit! so basically,
friends: join & edit
guests: join & edit (but not creators creations)
please think about this!
to avoid greifing!
Source:
http://starry-smooth-hound-shark.shark-host.net/2012/10/06/fortresscraft-photo-realistic-pixel-art-tiger-bruce-lee-a-starry-night/