Your information footprint on the internet is like your body in the real world: it defines your identity. Like seeing some part of your body, seeing some part of your information footprint – like the location of the device you’re posting from or the pattern of your language – may make it possible for someone to uniquely identify you even when there is no name or other explicit identifier attached. For example, your IP address is always transmitted, and when you’re browsing the web, your browser transmits information about the browser’s configuration to the website server. These details can be combined together to serve as a unique identifier. My advice, don’t do anything online that you wouldn’t do or say in public.