Everyone should immediately stop contributing to the stack overflow and its network. The human touch is what made it unique. Delete your profile from SO AND all your answers. Freeloaders are making money out of human contributions.
@marcusdeh @Pajo_16 @nixCraft Even that seems shaky these days - I'll try putting date restrictions on searches and regularly get stuff that the results page says is a week old, but actually dates from 2011. (Or vice versa.)
I'm not sure if they're just not respecting search syntax, something's breaking on the search engines' side of things, or if people are figuring out ways to make pages appear to be a different age than they actually are.