Facebook recently enabled embeddable posts (see announcement here) - theses embeds can include public status updates, images, videos, etc and enable social sharing directly within the unit. On Wordpress, it's particularly easy: simply paste the Facebook URL between the Wordpress embed tags. That easy. For Facebook, this is important for two obvious reasons: first, it encourages public posting for users and celebrities (brands are already public). And second, it gives publishers and brands a simple way to amplify their on-Facebook content - which in turn enables social sharing directly on the publisher site. Twitter has had great solutions here for years - Facebook's embeddable post can be an equally powerful mechanism (content dependent of course).