I don't see why this comment is downvoted, it makes a valid point. The only problem with it is that it equates inaction (Google's) with deliberate intent, i.e. it may have been that nobody actually asked Google to remove these links.
That having been said, these two attempts at crude humor and the one for Michelle Obama are kind of different: In the Santorum case, it's nothing but a bit of high-school naughtiness, pretty juvenile stuff over a made-up word. I don't think it hurts him in any way. The Romney one is also juvenile but is much more damaging because it has a true story behind it that is quite damaging to Romney (you know, if you thought he was a warm, caring person before). In the Obama case, because of the racial connection the humor had deeply offensive harmonics.
People who +1 these should know that they're actually playing into the hands of the Rebuplicans, because for every casual +1 clicked with a smirk, you'll get 10 Rs who hate liberals' (their term) guts and totally believe in the Democratic bias in big media and Internet content companies.