ghosting currently has 2 questions, no wiki, and no usage description. One of the questions is closed as too broad.
Can we either remove it for lack of necessity or add a proper description to prevent misuse?
I don't see a reason to keep this tag. It currently is being used on two questions, one if which is closed. It is an overly-specific tag which won't really be helpful to users. Ghosting is really just a lack of communication, so the communication tag would be applicable instead.
Not everyone knows what "ghosting" means. However it's an apt and succinct word to describe a phenomena that is fairly common and that leaves victims blindsided about what happened.
It's a nice, compact word that is optimal for a Tag. The problem, I guess, is that not enough people know what it means. In Google Trends, the term seems to be roughly increasing in usage since 2015-ish.
I think it doesn't hurt to keep it, it will eventually get more use.
I would instead considering dropping "burninate"-- that's actually a word that almost no one knows about. The etymology appears to be from a web-based comic-strip, "Homestar Runner"?? Never heard about it. The only way I can guess what it means is by seeing it's context. It also comes off the tongue very awkwardly. Burninate deserves to be burninated. What an ugly word!