Audience size estimates for the general survey were significantly higher than those specific to a single post. Likewise, users evolve their understanding over extended periods of time. To capture these longer-term processes, we analyzed cumulative audience: the total number of distinct friends who saw or interacted with each user’s content over the span of an entire month. Three quarters of the users in our sample produced more than one piece of content during the month, and half the users in our sample produced five or more pieces of content.