I have a client site which featured a "submit your testimonial" forum which she wanted to make easily accessible to clients.

As you all probably already know, we got slammed with porn. Since then, I have made the user registration only upon approval by admin.

Any suggestions on how to prevent problems like this without having such a strict registration policy?

Is it just normal procedure to have to manually remove the crap everyday?

Does anyone know how to remove MULTIPLE users from the phpBB2 admin section? I don't necessrily want my client in the DB removing items!