Trans people often use social media to connect with others, find and share resources, and post transition-related content. However, because most social media platforms are not built with trans people in mind and because online networks include people who may not accept one's trans identity, sharing trans content can be difficult. We studied Trans Time, a social media site developed particularly for trans people to document transition and build community. We interviewed early Trans Time users (n = 6) and conducted focus groups with potential users (n = 21) to understand how a trans-specific site uniquely supports its users. We found that Trans Time has the potential to be a safe space, encourages privacy, and effectively enables its users to selectively view content using content warnings. Together, safety, privacy, and content warnings create an online space where trans people can simultaneously build community, find support, and express both the mundanity and excitement of trans life. Yet in each of these areas, we also learned ways that the site can improve. We provide implications for how social media sites may better support trans users, as well as insular communities of people from other marginalized groups.