I'm a little in shock, I had no idea XenForo does not have this basic/important functionality. You are probably not aware but there is a new "hot" way to spam. Forums are currently bombarded with tiny image links, impossible to detect by the human eye: http://forums.macrumors.com/showthread.php?t=1271320 You see it in that thread because a code modification that displays text instead of the actual image. If XenForo displays the real image instead of a link, it will be undetected. We really need options to disable the BB Code for specific usergroups.