Q:

When a moderator uses their tools to destroy a user, can the user re-register using the same email address?

When a moderator uses their tools to destroy a user, can the user re-register using the same email address?
I don't mind the user participating in the future, but they are currently engaged in what can only be called very spammy behavior.

A:

Yes, users can re-use the email of a destroyed, unregistered account; this happened to me before. A user apparently can't re-register the email being used for a registered account; as a last-ditch effort to block a recurring spammer someone at SE turned their latest (suspended) account into an OpenID account to block them from making a new account over and over...using the same email, anyway. It's still not perfect.

