This week would have brought Princess Diana’s 50th birthday, and Newsweek found a unique way to celebrate. Their current cover features a digitally aged Diana walking a city street with her daughter-in-law, the former Kate Middleton. The accompanying story includes predictions of how her love life would have progressed over the years and what her Facebook profile might look like today. The issue is receiving varied responses, from "tacky" to "touching." What do you think? …