The Guest User is a great feature but it is completely crippled by the fact it take up a User License. If I buy 10 user licenses and have 10 users, no one has the ability to share anything with a Guest User because there are no licenses left.
Why not make the Guest User the great feature it should be by allowing it to be just that... a Guest User. It should not take up a User License unless converted to a regular user.
Customer support service by UserEcho