We don't have to go out looking for a club to join Lonnie, we get this shoved down our throats every time we fire up the game client...
...and because the pop-up fades in after a couple of seconds after the client opens, if we've clicked on anything on the client before the pop-up appears, then that click gets transferred to the pop-up, and if it's on one of those green buttons, then we're in a club.....grrr!