Not only might this garner more users, but it may expose issues, thoughts, questions, and any other type of advice/feedback to entire other communities with expertise in the various fields discussed on WebmasterWorld.
Give people badges to put on their sites and profiles that say something like "View my answers on WebmasterWorld" or something similar. Let us show off our expertise even more. Plus, you get more exposure/links, etc. to people that might not otherwise have known about WebmasterWorld.