Unlike facebook, google has a good track record of keeping settings like this unchanged. In fact, if you've already opted out of previous tracking related thing

Unlike facebook, google has a good track record of keeping settings like this unchanged. In fact, if you've already opted out of previous tracking related things (like personalized ads), it appears they set this new thing to off automatically. I'm no fan of these sorts of things at all, but at least google has yet to betray my privacy settings where it seems a routine thing for facebook.