I noticed that my Task Manager icon in the taskbar showed high resource usage, so I opened it to find that a single Chrome process was using over 2GB of RAM*. By closing Chrome tabs one at a time, I discovered this site was the culprit. I hadn't even used it yet: I had only loaded the page. Why would this happen and should I be concerned?
*For you detail-oriented folks: the screenshot shows just over 1GB RAM being used because I closed the original tab and reopened it before taking the snap.