This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Mac users can confirm, but I think Safari already has this feature. FF might have a plugin, haven't looked yet. For me IE doesn't exist, so no comments there.
I think Google guys are smart. They will learn from other people's mistakes. I would not worry much...for now.