This is Facebook we’re talking about, not some mom and pop shop vulnerable to “bad press.” I really don’t see what sort of legitimate threat Murdoch could pose to Facebook outside of any threats they already face on a daily basis. If the threat of Murdoch “going public” with his feelings on Facebook were sufficient to threaten its very existence, Facebook would have gone out of business a long time ago.
And the point of my tongue-in-cheek comment was that Murdoch did buy MySpace, and utterly failed to compete with Facebook, or even to grow what little traffic MySpace had before he bought it.