It's also linked to in the description for the NSFW forum: http://forums.finalgear.com/off-topic/Click up the top of the screen there where it says 'User CP'. Then, in the list of thingies on the left click 'Group Memberships'. Then select the groups you want to join and click 'Join Groups'.
I got a well deserved infraction for being a retard, but is there something I am supposed to do upon getting one? What are the consequences?
I got a 3-point-infraction once with a one-day-ban, but when the ban was over the infraction was already expired as well.. never knew what the infraction did, actually.
Other than that, I think it's just to make you feel ashamed.
I thought they reduced your rep. points or power, because they show up as red blobs and have points connected to them.