Once in a while I come across what appears to be a completely abandoned question, by which I mean:
No Question Upvote
No comments, or comments that don’t attempt to answer (having same problem, or asking for clarification but nothing further is provided)
Author has not accessed system for years
In these cases where the question clearly no longer has value for the author, and usually requires more information to answer properly, is it acceptable/appropriate to flag the question for deletion or moderator attention? If so, what flag would be most appropriate?
As well, assuming the same criteria but the user is still active, is it appropriate to post a new comment asking the user to delete the question if it is no longer applicable?