When I click View New Posts, the key displayed at the bottom of the posts looks funny using Mozilla Firebird (see attached image). It looks ok with IE and Netscape 7. When I go directly to a forum (not View New Posts), it looks ok under Firebird.
Somebody has written a tagged-browser plugin for IE but I've never used it. I'm surprised that MS hasn't included it yet.
In Mozilla/Firebird/Firefox, you can set it up so that a middle (wheel) click on a link will open a new tabbed page. Then, middle clicking on that tab will close it. It's a much faster way to manage multiple pages/windows. It drives me nuts when I need to use IE and can't do this.