I was asked on another forum why I did not use keyword-rich URLs for my hack. The reason to use forum#.html as opposed to my-forum-title.html being:

They're cleaner, easier to type in, don't look as messy, shorter, and, in my opinion, really aren't worth the overhead. It takes processing time to parse every forum title into its URL counterpart throughout the forums. I feel that by simly putting the forum title into CSS'ed H1 and H2 tags, you can accomplish just as much SEO as keyword-rich URLs (which I don't even think weigh very much anyways) without the overhead.