Just don't use meta tags on a forum.
A forum is meant for discussion and uses its own search engine to search the forums for posts, users, etc.
I can understand using adwords or meta tags on a web page, but it just seems kinda silly to put meta tags on a forum.
Just my $.02.
I'm not even angry. I'm being so sincere right now, even though you broke my heart and killed me. And tore me to pieces, and threw every piece into a fire.
the meta tags are not so that you can search your own site more effectively, they are so that external sites/search engines can better locate your site and properly categorize it and find it when people search those terms.
Dynamic meta tags are best and the Google SEO plugin supports them on several pages.
Lost interest, sold my sites, will browse here once in a while. It's been fun.