Is there any way to use the User Registration add-on to allow users to sign up to more than one site on a Multisite install? It works great signing up to a single site, but then it's no good (I know that's WP not GF).
Is this something that can be looked at in a future incarnation of the add-on?
It would be good if it detects that a user is already signed up to one site on the network, it would then just ask for the username/password to add the user to the current site they wish to join.