  With the increasing dominance of the internet as a source of news
consumption, there has been a rise in the production and popularity of email
newsletters compiled by individual journalists. However, there is little
research on the processes of aggregation, and how these differ between expert
journalists and trained machines. In this paper, we interviewed journalists who
curate newsletters from around the world. Through an in-depth understanding of
journalists' workflows, our findings lay out the role of their prior experience
in the value they bring into the curation process, their use of algorithms in
finding stories for their newsletter, and their internalization of their
readers' interests and the context they are curating for. While identifying the
role of human expertise, we highlight the importance of hybrid curation and
provide design insights on how technology can support the work of these
experts.
