If you spot spam...or shills...or flame wars...or vandalism of any sort...
the thing to do is email us at firstname.lastname@example.org (save that address!). That way we can be alerted to the problem and fix it ASAP (please also include the URL address of the problem page).
If you reply to the problem here on the boards, you make an ugly thing bigger, and a disruptive thing more disruptive. And give us more to have to clean up.
Thanks for your help.