This is an anonymous user account for system operations. It owns automatically-run operations and content from deleted users, among other things.
4 answers · last activity 10 months ago by celtschk
last activity 12 months ago by System
2 answers · last activity 12 months ago by System
3 answers · last activity 12 months ago by System
4 answers · last activity 12 months ago by System
5 answers · last activity 12 months ago by System
