Right now... even if you are not a registered user on the forum, a person can use facebook to log in and register... problem being that new users to my forum dont know that they can use their facebook info... .so they make a new login all together... and then when they go to login the next time they see the facebook button and press it there... this creates 2 users for the same person. Facebook link should be on both the Register and Sign links.
Just my 2 cents... which true value is much less.