If a member is banned from DU...

[SDuderstadt]

(or "tombstoned") and tries to return under a new username, is there something that gives them away to DU admins and/or mods? Is this flagged automatically somehow when they try to sign up again, or does DU rely upon alerts from members to tip DU off when this happens?

[Skinner]

1. Both.

There are some tricks we can use that help us find people who are banned.

But we also depend on alerts.