Actually if you think about it makes sense. If your post was useful, it will rank higher in searches due to backlinks, which is how search engines estimate relevance. So I’m glad my harebrained and stupid comments have sunk into obscurity.
One of these days I’ll have forgotten more than I know. Or maybe I’ve crossed that line already, I don’t remember.
These are links from other sites that link ‘back’ to this one. That’s the reason the old domain was supposedly so valuable to people trying to game the search engines. The theory is that if lots of sites link to another then it must be relevant.