Here's a Twighlight Zone query: A strange issue with only several webpages in a whole website, that disappear one sunny day from google's results. They keep their original PR but wouldn't show at all, even though they used to be a first page result. Never duplicated nor gave a permission to anyone. Also checked this with copy-reveallers. The strange thing about it is that if this was indeed the case, I should have expect the whole website to vanish from search results. Other website pages show normally. I've heard from colleagues (and rivals) about this weird situation, but have no clue how to resolve the predicament. Any suggestions?