If you haven’t heard of Open Graph, you’ve at least heard of the system Facebook is implementing in some context, or seen an unusual message upon logging in to Facebook.

Using Open Graph, a third-party application can provide user data to Facebook, so it can be automatically rendered on the user’s timeline.

Og:title is part of the Open Graph protocol, a set of meta tags developed by Facebook that allows any page to become a rich object in social graphs. While it’s used to control how content ...