This study reveals a significant shift in how users perceive and engage with social media over time. Our analysis is based on qualitative longitudinal research carried out over ten years, involving a small group of participants in 2012, 2017, and 2022. Semi-structured, in-depth interviews were conducted using stimulated recall allowing for retrospection and reflection. Through this methodology, we trace the shifting perceptions of social media users, from initially embracing these platforms for quick, fun, and social activities, to later recognizing their potential intrusiveness and seeking strategies to manage their use. We outline three central trajectories that illustrate shifts in social media use across time: from public performance to private interaction, from producing to consuming and from fun to problematic. For HCI and social media studies, these findings underscore the need to prioritize user agency, ethical design practices, and longitudinal research endeavors to understand the evolving impacts of social media.

The everyday use of smartphones with high quality built-in cameras has lead to an increase in museum visitors' use of these devices to document and share their museum experiences. In this paper, we investigate how one particular photo sharing application, Instagram, is used to communicate visitors' experiences while visiting a museum of natural history. Based on an analysis of 222 instagrams created in the museum, as well as 14 interviews with the visitors who created them, we unpack the compositional resources and concerns contributing to the creation of instagrams in this particular context. By re-categorizing and re-configuring the museum environment, instagrammers work to construct their own narratives from their visits. These findings are then used to discuss what emerging multimedia practices imply for the visitors' engagement with and documentation of museum exhibits. Drawing upon these practices, we discuss the connection between online social media dialogue and the museum site.