Sheryl Sandberg, the Facebook executive famous for her book Lean In, published a much more personal piece of writing yesterday. She posted an emotional essay about her grief since her husband, David Goldberg, died in an accident a month ago. It’s a powerful window into loss -- and it’s all the more remarkable because it comes from Sandberg, who’s been the embodiment of “having it all.” We discuss that and more in our weekly Internet news roundup.