Ooops, the button is called MARL ALL
FORUMS READ. My bad.
It's hard to explain without screen shots so here it goes. After clicking the NEW POSTS link, my page would look like this with the little blue/ yellow markers in front of the thread titles alerting me to which threads had new posts since my last visit.
After reading all of the new post, one could scroll to the bottom of the page and there was the MARK ALL FORUMS READ link/ button.
I would then click that button to mark all of the forums read. Then, the next time I visited and hit the NEW POSTS link, I would get a list of the most recent posts with only blue/ yellow markers in front of the thread title if it had activity since my last visit.
In the case of these screen shots, there had been activity in one thread since my last visit, showing up with the blue/ yellow marker in the first screen shot. After hitting the MARK ALL FORUMS READ, the NEW POSTS link remembers what I've already read and prevents me from going through old posts.
It doesn't seem like a big deal in these screen shots since there was only one new post, but I find it helpful.
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