I've just joined super user, and I've associated my super user account with other accounts (at least one of which has >200 reputation), but my SU account still has a reputation of 1. Is it working like it should?
From stackoverflow blog:
Be sure to visit the accounts tab of your user page after you join, so you can get the +100 account association bonus on Super User! (Note that this requires at least 200 rep, so be sure to initiate the association from the site where you have at least 200 reputation.)
So you shouldn't make the association from the superuser site.