To be fair, some topics are extremely difficult or impossible to search for because of the way search engines work. If the search involves common words or part of an extremely common phrase, you will get a bunch of results not related to your search. The only reason the other posters know the link is because they remember reading about it in the past.
For example, there is a new brand of basses available at GC, Mitchell Bass. When I search for info on them, I get results about bass players named Mitchell, bass fishermen named Mitchell, and people literally named Mitchell Bass.