A friend once sent me a light-hearted reminder that it was her birthday in a few days. She does this every year. The problem is that she died a few years ago, and I simply cannot bear to block her (and her digital messages) from my account. I wouldn’t want to either: her satirical messages still make me smile. Like millions of other people, her continued digital life serves as a reminder of her unique identity. Her messages from the grave are a profound example of a contempor