Gay GreetingsHallmark is introducing a line of same-sex marriage wedding cards. The cards feature designs with two tuxedoes holding hands, two overlapping hearts, and rows of rainbow-colored hearts on their covers. Inside, the cards have a neutral message, making the cards appropriate for commitment and civil union ceremonies as well. The Greeting Card Association also notes that when a large company like Hallmark begins entering a niche market, it signals that a trend might happening within the greeting card business. Our question: is it too late to send Ellen and Portia written congratulations? [AP]