The feedback of this site was completely filled with spam.
Deleting this was quite a task.
Luckily there is such a thing as imacros add-on for Firefox.
With this, you can easily record a macro to delete a spam message.
With the play function you can delete a spam message.
But with 42 pages of spam, this is no fun.
Luckily there is a play (loop) function you can use to run the macro multiple times. :-)
The cleanup was done rather quickly.