Don’t get me wrong: I also use Facebook. For many reasons it is quite nice and useful for me. But the reason why Gruber says this, and why I say “Yes, that’s right” are things like this:
Treat Facebook as the private walled garden that it is. If you want something to be publicly accessible, post it to a real blog on any platform that embraces the real web, the open one.
The Internet Archive is our only good defense against broken links. Blocking them from indexing Facebook content is a huge “fuck you” to anyone who cares about the longevity of the stuff they link to.
Read the full post here. Well spoken, Mr. Gruber.