while this is a great hack and will get your pages on websites, I think a lot of people are going to be very disappointed when they land on a page only to realize that there's no way to:
a) click through to your forum
b) find the original thread in your forum so that they can reply or join.
I showed this to a bunch of very seasoned web developers I work with and they ALL expressed the same opinion. It need to be enhanced, THEY THINK IT'S GREAT MIND YOU, but will leave the clicking-through end user somewhat disappointed. I'm look at the code right now to insert the link via the php (for browsers) instead of writing an external rule.