Because it profiles you.
It's the population as a whole that is the content, not any one user.
It's not the population as a whole though is it, it's the blue check marks that drive usage and create the majority of the content, without them the majority of people would leave
@greentricky started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Because it profiles you.
It's the population as a whole that is the content, not any one user.