While many people reasonably aren't comfortable with Facebook knowing where you're going all the time, it is a very different thing than Facebook sharing that knowledge with all of your Facebook friends.
That feature, the one the original article is talking about, requires you to specifically opt-in before the "Bob read an article about sexual dysfunction" starts showing up in everyone else's news feeds.
I'm a little concerned that, as a website operator, I really ought to work with Facebook because it will lead to more PVs because it is advertising my site for me.
But I've been uncomfortable for some time as I watch my friends and my children slowly confuse the web and Facebook. It's easy to see a day when, for most non-techy folks, the web is Facebook.
So, I can close my FB account. But I think, in the spirit of doing the right thing for the world, the web and the future, I also have to take Facebook off my site and face whatever consequences that may bring.
Or am I being a fuddy-duddy old reactionary?
The different in FB case, that they are not "required" to track URLs so they could of chosen an alternate implementation where sites in-directly served FB scripts through their own servers. And FB would only received a request when someone interacted with their elements.
Google isn't using it to post to a users wall/feed so that advertisers have more keywords to advertise to.
Neither is Facebook. Facebook is not using their like buttons for this feature, it is a separate opt-in feature.
I don't get the freakout people have over fb potentially tracking you through something you can see (the like button) vs google doing it everywhere with something you can't (the analytics js)
That URL is being used for customization of Like button, so that on some sites you can see 'Friend A, Friend B and 345 others recommended it'.