“…We used the learning ecologies and affinity spaces concepts jointly to frame our investigation of educators’ SDL on Reddit. Prior studies on educators’ voluntary use of social media have also used learning ecologies (Peters & Romero, 2019; Stevenson, Bower, Falloon, Forbes, & Hatzigianni, 2019; Veletsianos et al ., 2019) and affinity spaces framings (Bruguera et al ., 2019; Greenhalgh, Rosenberg, Staudt Willet, Koehler, & Akcaoglu, 2020; Staudt Willet & Carpenter, 2020), but this paper uniquely combines the two.…”