It's fair game. It shouldn't be the soul basis of your decision making, just another tool to be used thoughtfully.

People should pay attention to their personal brand. If someone "googles well", meaning the search results are consistent with the person before you, that's a good sign. If someone "googles poorly" meaning inconsistent, or as Ricky Ricardo would say, "Has some 'esplaining' to do", that's okay too. It's how they respond that makes the difference.

Now wire tapping, THAT would be a blantant invasion of privacy.