Joey Porter: Worst free-agent signing of all-time?

Pro Football Weekly (PFW) has already published its list of best/worst free-agent signings of the year. Not only is Joey Porter (Miami Dolphins) listed as worst of the year, PFW postulates whether Porter will go down as one of the worst free-agent signings ever. Steelers' fans will get a chance to see Porter in action again next week. Meanwhile, has anyone been watching Miami games to see how he's been playing?