The fundament for well-functioning relations in all societal spheres and important in all research is trust. This paper explores methodological concerns with trust and digital methods studying social media. Trust in media research emphasize the importance of relational trust, based on how “Trust, honesty, and respect are pre-conditions of the search for truth/truths” (Zuber-Skerritt 2005:54). Trust in journalism is created through fact-checking as a key journalistic process adding to news-selection and editing. When media and journalism research study the spread of social media content, sharing certain content (often news) or not sharing this content, the analysis tends to determine that if something is not shared, it is not trusted. However, in this work several case studies showing the opposite – that non-sharing can signal trust – is presented and discussed. A model of various ideal-types of non-sharing, so called communicative genres (Lomborg, 2011), concludes the paper with suggestions for empirical research for the social networked media YouTube, Twitter and Facebook. A future challenge is argued to exist in ephemeral social media as Snapchat.