He may be dead, but he's got more Twitter follower than you! Just because a celebrity is dead, it doesn't mean that he can't tweet, as Dorothy Pomerantz Forbes explains in this article about the social networking lives of dead celebrities:
Living stars need to use social networks to keep in touch with fans. Stars like Justin Bieber, Kim Kardashian and Lady Gaga have shown how powerful it can be to have fans feel like they are friends with a celebrity.
It’s a slightly different story for dead celebrities. It would be extremely weird if a dead celebrity replied to a fan’s tweet or Facebook posting. Instead, the estates use the sites mostly to keep fans up to date on any new products and to give fans a place to interact.
“A few years ago, it was rare for deceased stars to have official presences on social networks,” says Daniel Dearlove, head of data at Starcount. “The accounts can serve as communities for fans of the dead star.”