An online community is a group of people with shared identities or interests who use social technologies to connect and interact with each [Page 587]other. Since the early days of the Internet, online communities have been particularly important means for trans people to connect with similar others, explore identity, share resources, document transition, and work toward activism and advocacy. Some of these communities are for trans people broadly, while others focus on particular trans identities (e.g., trans women, nonbinary people, trans men) or particular identity facets or experiences that intersect with trans identities (e.g., race, disability status, age). Early Internet trans online communities involved high levels of anonymity, which enabled people to safely explore trans identities online. However, when many trans communities moved to social ...