The END Framework of social media interaction is an original theory from which we can derive novel expectations about the consequences of creating or being exposed to politically informative material on the Facebook News Feed. END refers to the characteristics of a subset of content that circulates in a social media ecosystem: a personalized, quantified blend of politically informative expression, news, and discussion seamlessly interwoven into a wider variety of socially informative content. Generating and consuming politically informative content are distinct political behaviors, albeit ones that fuse together characteristics of more recognizable political behaviors. Analyzing how these online behaviors are conceptually similar to and different from the behaviors they most resemble in the offline world—expressing a political identity, seeking political information, and discussing politics with others—suggests distinct effects of political interaction in the information rich environment of social media. Differences in the content itself, the context in which the behaviors occur, and the constitution of the people who interact with each other are sufficiently divergent to suggest that we look beyond traditional outcomes and focus instead on how these interactions affect our evaluations of our fellow citizens.