Spambots?
Not on my watch. I've enable Visual Confirmation (Requires users enter a code defined by an image when registering.). If this doesn't work, all new members will need to approved by myself.
I'd also like to remind all moderators that they have the ability to delete posts by scrolling to the bottom of the page in question and clicking on the link within "You can moderate this forum". Then, it's a simple matter of checking the box to the right of thew thread title you wish to delete and clicking the delete button at the bottom.
Meanwhile, back to cleaning channel strips...