Links alone are insufficient should the sites be taken down. If you want to record something, copy (or screenshot) the content into the posts.
That would require a lot of time and energy on my part.
If I were to fill in the blank left by my thread title it would be ... "anyone here is interested in this."
I don't expect to generate much interest, and so I think providing links will be good enough for the time this thread stays in the headlines.