I agree, we shouldn't be using facebook in site links or emails unless the link is very clearly identified as being a facebook link.
But equally, we shouldn't have google-hosted code or services in web pages -- but the page you're reading presently has at least one google service or link:
Google may, or may not, be worse that facebook but we should always presume "it's google, therefore it's spyware".
It also seems to be completely unnecessary -- I'm blocking it, and the page is working fine.
Its high time every webmaster adopted a strict "no third party code or services unless it's carefully vetted open source and rehosted on our own servers" policy.