I suggest we add a guest user to (Ku,Xu,Go,U)buntu and make it available in a package. The guest user can set up from System->Administration->Guest User. The guest user doesn't keep it's settings and files, however they can be preserved by the admin. The guest user would have a password "guest" or any password the admin chooses.
This would be great for people who don't like guests using their accounts and wish to not preserve their settings and data.
--I WOULD NOT WISH TO FILE A BUG IN LANUCHPAD--