  People spend a significant amount of time trying to make sense of the
internet, collecting content from a variety of sources and organizing it to
make decisions and achieve their goals. While humans are able to fluidly
iterate on collecting and organizing information in their minds, existing tools
and approaches introduce significant friction into the process. We introduce
Fuse, a browser extension that externalizes users' working memory by combining
low-cost collection with lightweight organization of content in a compact
card-based sidebar that is always available. Fuse helps users simultaneously
extract key web content and structure it in a lightweight and visual way. We
discuss how these affordances help users externalize more of their mental model
into the system (e.g., saving, annotating, and structuring items) and support
fast reviewing and resumption of task contexts. Our 22-month public deployment
and follow-up interviews provide longitudinal insights into the structuring
behaviors of real-world users conducting information foraging tasks.
