Slither.io is an addictive mutiplayer snake game

Slither.io is the classic game Snake, but massively multiplayer and with the ruthless eat-and-grow mechanic of Osmos. The "eat" mechanism is subverted: hitting other creatures results in death, so you must instead outmanoever them and force them to hit you. On my best run, I got eaten at 7,000. Can you do better? [Thanks, Joel!]