We all use the web in a variety of contexts and with a variety of roles, but most web browsers don't provide a way to separate browsing data from those different usages. The Firefox Multi-Account Containers extension provides a solution to this problem. Users may create as many distinct containers as they wish, each of which maintains its own separate set of browsing data. By default, the plugin provides containers for "personal, work, finance, and shopping." None of the browsing data from tabs in the "Personal" container will be available to the "Work" containers. So, for example, a user could log in to a work Twitter account and a personal Twitter account simultaneously in different browser tabs - similarly for work and personal email. A user could also keep social media sites like Facebook confined in their own container to keep these sites from tracking the user across the web.