The document discusses a study on how younger journalists in their 20s use social media. It finds that they use a wider variety of social platforms like Twitter, Facebook, YouTube and Instagram more actively than older journalists. However, their past social media posts from when they were younger sometimes conflict with their present professional roles. This causes a "time collapse" as they struggle to separate personal and professional identities online. As a result, some young journalists are more cautious about self-expression on social media out of fear their past digital footprints could be used against them. The document also finds social media is reshaping journalists' newsgathering by providing a "networked public" but that younger and older cohorts use different social platforms.