Congratulations to Sarah Beth Hopton! Sarah Beth just published an article, "Saving the Sea, Socially: Measuring the Relationship between Content and Gesture on Facebook," co-authored with Mitch Parry from Computer Sciences, in Communication Design Quarterly.
https://sigdoc.acm.org/wp-content/uploads/2016/07/CDQ-4.2B-2016.pdf
The piece analyzes what kinds of rhetorical (visual and verbal) content solicit certain valuable engagement gestures on Facebook specific to the environmental nonprofit The Roatan Marine Park.
Be sure to congratulate her when you see her!