This collection of articles about how to avoid spam filters is fascinating reading for filter authors. It is encouraging to see how hard spammers have to work to get around filters. These articles also suggest how spam will evolve in the future. JGC's Field Guide to Spam How to Avoid the Email Black Hole Spam Filters Run Amuck CLIP & SAVE guide to avoiding sp^m filters How to Avoid the 'U' Word 20 Ways Opt-in E-Mailers Can Outsmart Spam Filters Words and Phrases that Trigger Some Spam Filters Watch Out For Spam Filters! How To Avoid Filter Fallout How to Cope With ISPs’ Filters Avoid the Filtering Traps SpamCheck Sending High Volumes of Email and the Precautions to Take Filter Breeze