This study examines issues surrounding writing center social media usage and non-usage, a topic that is often discussed in informal venues like conference sessions and blogs hosted by writing centers but is seldom researched. Specifically, this study raises the question of whether or not writing centers use social media. Regarding social-media-using writing centers, this study additionally asks what platforms they use, what purposes they have for using such media, the audiences they target, the multimedia content (e.g., images) and web-based affordances (e.g., hyperlinks) they use in their posts, and whether or not narratives emerge from their posts. In addition, this study looked into the purposes writing centers have for choosing not to use social media. To gather data related to these questions, this study implemented 3 methods: a national survey distributed to US writing center administrators; interviews with five writing centers, two not currently using social media and three using social media; and an analysis of social media posts from the three sites using social media created during the Spring 2019 semester. Data from these three sources revealed that, of the 244 writing centers represented by the survey data, 153 (63.7%) were using social media. A little less than one-fifth of these writing centers were using a single platform, with the rest using two or more. Across all 153 writing centers using social media, the three most common platforms were Facebook, Instagram, and Twitter, and these three platforms together were the most common combination. Writing centers commonly used social media for information-sharing, which took the form of promotion or outreach, and tended to target current students and faculty, though some did target alumni. Further, these writing centers were commonly using images in their posts, but hashtags and other web-based affordances were less common, particularly on Facebook. Together, these posts told a common narrative of writing centers as supporting individual writers, but they also told localized narratives of community connections and welcoming spaces. The 91 writing centers not using social media had commonly used social media in the past but no longer did for three common reasons: a lack of time, a lack of staff, and a lack of interest among current staff, three issues that together affected the sustainability of writing center social media use.