I think the best browser to use on this site is Chrome, maybe Opera.
On VG Chartz' Network Hub page, IE disables the "New Tab" (EDIT: Forums list) options but Firefox sometimes slows down after a while specially if you have more than two, three tabs open even with add-ons. Opera is pretty nice and can handle it pretty well.
It looks great on Chrome plus with all the extensions makes it faster: Flash Block, Ad Block. The only thing Firefox has on Chrome (for me anyway) is the ability to copy and paste from Notepad and disables the double spacing.
Weird. I just remote-controlled my PC at home from work, and it looks like you may be right. You can "Reply", "Report", "View Post" except "QUOTE". I'll try it some more when I get home 'cuz remote can get a little buggy...