Discussions of research having impact were for a long time limited to citation tracking, to estimate how much one piece of work influences subsequent explorations. However, with calls for research to have impact on the broader society—breaking out of the closed circle of research feeding yet more research—there’s a lot of interest in seeing how we might trace that impact pathway as it breaks through the membrane insulating the world of research. Altmetrics has held the promise of tracking just such traces. At STI 2017, several leading researchers on the topic gave valuable updates on the state of the art, and their estimation is that we should be seriously cooling it with all the hype. This post sums up the points that stuck out to me from their various presentations, and tries to outline my takeaway of what we should be learning from altmetrics.