http://nimtug.org/blogs/damien-mcgivern/archive/2008/12/13/stop-forum-spam-wrapper-and-asp-net-httpmodule.aspxStop Forum Spam has an API that allows you to query their spam list using a REST call. I've written a simple wrapper for their API and created a HttpModule that checks the clients IP against the spam list. Making http requests is very expensive soenCommunityServer 2007 SP2 (Build: 20611.960)