Facebook Promoting Public URLs and Sharing?

Facebook continues their push towards public content - both for personal and brand / page accounts - and, as we all know, it is a tight, challenging line to walk between private and public content... particularly considering:

1. Facebook started as an entirely closed, private network 2. Migrating from private to public is both technically and organizationally challenging: how to do share and find specific content in a commingled world? 3. Twitter has found success in an entirely public world I am not sure if this is a new feature, but it is the first time I have seen it: below a recently posted photograph, I have the following message and option:

The URL goes directly to the public page (see here) and the "share" functionality goes to an email. If this gains traction, or Facebook gets comfortable with it, you can imagine other activities like posting to Twitter.

You can tell that this is an early step in the direction: the formatting is not very bold and it is placed towards the bottom of the page (below comments). But it is a clear step in the public direction and is more prominent than including it with the share button (which you might not have otherwise noticed).