You're right about word of mouth, Cog. All of my friends know about WF because of me, but unfortunately, no one's joined here
This site has certainly grow since I became a member. I agree with the rest of you that we will probably be around 6,000 members by 2009 if not more. I also agree with Banzai that the contests draw more people in as well. I have also told a handful of people about this forum. Some of them have joined. Hopefully this forum will continue to grow more and more.
As a new member I'd like to point out that what brought me here was the dedication that I felt from the people who have posted a lot. I appreciate their clear commitment to fostering a caring and thoughtful environment where writing can flourish. As long as mods/reviewers/senior members keep this in mind the site will grow...plus being the #1 result on google for "writing forum" helps.