The amount of digital data we produce every day is mind-boggling. The content produced on social media fuels the flood of data. However, social media content is very ephemeral and is often not archived by universities or heritage institutional stakeholders, creating serious challenges for (digital) scholars who want to use the content of archived social media as a source. Also, the absence of social media in national web archiving initiatives raises great challenges of preserving our digital heritage and supporting the understanding of contemporary society and its future. This poster abstract introduces BESOCIAL (2020-2022) – launched by KBR and financed by BELSPO1 -, a cross-university collaborative and interdisciplinary project with a goal to develop a sustainable strategy for archiving and preserving social media in Belgium. This project builds on the PROMISE research project (2017-2019), which developed a strategy for archiving Belgian websites. Together with an interdisciplinary team – CRIDS2 , CENTAL3 , IDLab4 , GhentCDH5 , and MICT6 – , a Belgian opening in the social media archiving landscape is made. The goal is to create a strategy for analyzing social media expressions from a linguistic, cultural, historical, … perspective. In this way, this “new” form of born digital data will be preserved and searchable as part of our cultural heritage.