Well, it's not asking anything of anyone to view the content, so I guess even if it wasn't Google's, it's fine.
Pretty interesting. It's not specifically about Google. The content seems applicable to any web search engine.
> Verify the credibility of information you find on the web.
> Avoid confirmation bias when conducting searches.
> To verify the source of a piece of information, use the precise information you have.
> To confirm a fact, use a generic description for what you seek.
