Ghost noting is sort of like
something that happens to your blog which prevents it from really interacting with anyone else on Tumblr.
You can’t reply to people’s posts (including photo reply). When you like people’s posts or follow people’s blogs it doesn’t show up or send them a dashboard notification that you did so. When you send or reply to messages, the
person receiving it won’t receive a notification. Also, when you reblog
something from someone else, and when someone else reblogs something from you, it doesn’t show up in the notes.