The most tedious part of managing forums for me is looking up spammer IPs, researching their subnets, and discouraging or banning an entire or partial subnet, where justified. Manually discouraging bad subnet neighborhoods is extremely effective in cutting down on spam in cases where StopForumSpam and other third-party services fail. Because I manage multiple forums, all that work has to be duplicated every time I ban or discourage a new IP or subnet of IPs. Anyone who manages two or more active forums will know exactly what I'm talking about. It would be great to be able to share data about banned/discouraged IPs between different forum installations. Maybe this data could be stored in an external file instead of MySQL or an option could be added to import and export it quickly so it can be shared among different forums.