Riding Metro's light rail trains with a bike is not fun, especially when there's a crowd. Space is limited and bikes, unless foldable, are clunky. In Portland, where the train cars are a different model, bringing a bike is a little easier, especially since you can store them vertically on a hook. Cody Fogh's post on "Metroquette" yesterday led one commenter to say "I feel like I need some bicycle 'Metroquette' tips." To that, we......