When I am reading a thread, I read to the bottom, then hit refresh to load any new replies that were posted while I was reading. If FireFox refreshes and goes to the bottom of the page, I have to scroll back up the page to try to figure out where I was when I hit refresh. IE would put me right back where I was and just load the new posts below that. This is VERY helpful when you are on a fast moving thread.
I don't know when I just hit refresh on this page FF stayed right where I was, maybe because there weren't any new posts. I went to weather channel and refresh there pops to the top of the page and then right back to where I hit it when the page loads fully.
Just tried it halfway up this page and I stayed there.