Problems with inappropriate content should be reported via the “Report Post” feature. Just click the http://forums.catholic.com/images/buttons_cak/report.gif image in the problematic post and fill out the form.
Ideally the complaint should cite the specific rule than has been transgressed. For reference, forum rules are posted here.
There is no need to submit the same report twice or to join with others to express outrage over an offensive post. One report is sufficient. Multiple reports on the same offense only add to moderator work loads.