Admin authorizing new users?

One method I've used is to set a "Start Group" and give them post rights to only one forum, where they must introduce themselves (or whatever) and have instructions to that effect included in the email activation. Then the admin sets a watch for that forum so that he/she receives email notices for any posts and can upgrade the status or disable the account as the case may be.

**I guess you could also set a static email cc to the admin for a user activation too rather than watch the forum.