I always found Tab-based programs like Firefox awkward to use, as I could not change between or close tabs with the known Alt-Tab, Alt-F4 hotkeys. Until now.
Check out this extremely useful post.
New tab Ctrl-T Close tab Ctrl-W Undo close tab Ctrl-Shift-T Next tab Ctrl-Tab Last tab Ctrl-Shift-Tab Bookmark tab Ctrl-D Select address bar Alt-D Select search bar Ctrl-K
Never have to ckick again in Firefox !!! Erm, on second thoughts…