someone who enjoys viewing content on facebook, twitter etc without 'liking' or adding anything to the conversation
"Hey Pete, good to see you, I'm loving your status updates and the pics you post"
Pete: "Really now? This is fascinating. You tell me this now that you're bumping into me in the real world, but for some reason you can't click 'like' or add to the conversation. Why do you enjoy & ignore? You're such a social voyeur!"