I do believe we have a bot in our midst.
Take a look over here.
Twice now this anon has posted dead links to old posts that have already been deleted.
The latest incident that I called out, the original post he is linking to was deleted by me 6 hours prior to him posting his response. That is not normal behavior. That is a program waiting a predetermined amount of time prior to replying to make it appear like a normal conversation.
The program however did not check (or can not check) to see if the previous post was still there.
EYEs open kids!