Attention, Seattle caffeine addicts....wait, let's rephrase that. Seattle, what a week it's been for free coffee! First, Starbucks debuted a new blend on Tuesday, giving patrons a free taste which resulted in lines out the door at many stores. Now, tomorrow, McDonald's begins a four-week promotion called "Free Latte Friday." Go to any McDonald's in Western Washington tomorrow before 10:30 a.m. and get a free (Mc)latte. McDonald's has launched "Un-Snobby Coffee.com" and have recently launched......