“…Online communities have long been important social spaces where community members can find support and social interaction [65], including people who are part of vulnerable and marginalized communities: for example, trans and/or nonbinary communities [14,47], communities for persons who are LGBTQ+ [24,59], communities living outside (e.g. unhoused populations) [62,63,110,113], senior/elderly communities [50,112], and communities for persons living with disabilities (PWD) [37,38,55,74,99,115]. In these spaces, group identity can be very important [102], as well as safety [85,100] and privacy [25,47], yet platforms don't always have what communities need [19,20,25,85,100,114].…”