Just mark the forums you don't like as having been read some time in the way distant future. Something like:
[link|http://z.iwethey.org/forums/actions/forum/markForumRead?forumid=3&markstamp=2099-12-31+08%3a24%3a28.00|http://z.iwethey.org...1+08%3a24%3a28.00]
Just substitute the forumids for those you are not interested in.
And exactly how do you suggest I know which forum relates to each forumid? That's like taking pot shots in utter darkness with a 357 Magnum. You and Scott wanna stand in the same room with me? ;-)
If the forumids follow the same way they're listed on the main forums page, then I could see your point. Are they listed in the same order as their ids, Scott?