Some more suggestions

Here are a few things that I think can be done

• A way for the admin to manually activate the accounts, just in case there's a problem with mail sending.
• A 'restrict registration' option that defers all account activations until after the admin has manually allowed it. There would be a page that lists their IP and email address and the admin can decide if he wants to allow this user into the forum or not. This would be great way of warding off trouble makers.

I think it would be great if there was a 'pending members' page where you can see all the members that need to be activated and you can just check all those that you want to activate.

It's simply awesome that you're always looking for ways improve this great piece of software. Good job!