Nevermind. I thought I had it figured out, but after playing around with it for a bit I have come to the conclusion that I don't understand exactly what it is for .
I use it all the time. It is supposed to take you straight to the first post after the last one you read. It does not work all the time, but I find it a huge time saver.
If it worked correctly it would be an huge timesaver when reading loooooooooooooooooooooonnnnnnnnnnnnng threads like the Ebay thread on the Budget board. It usually gets me to at least the correct page so thats something.
Not sure why you guys think it doesn't work. It works fine. It brings you to the first unread post since you were last in the topic. How else do you pick up where you left off in long threads?