Somehting is odd with your link, after I click on it I get redirected to
https://secure.forums.equipped.org/registration/?rPage=login&url=http%3A%2F%2Fforums.equipped.org%2Fubbthreads.php%3Fubb%3Dshowflat%26Number%3D234511&eRightsSessionExpired=true&forced=true

(I'm at work so stuck in a crappy web browser)

If I copy and paste just the link it redirects to
https://secure.passport.mnginteractive.com/mngi/servletDispatch/ErightsPassportServlet.dyn?url=http://www.twincities.com/ci_19196684?nclick_check=1&forced=true

looks like you have some sort of fancy authentication.