Just like matif525 said below, this addon is almost perfect ... except for the cases when users try the 'Undo close tab' command after opening a new tab. Great work, developer, but you should take a peek at New Tab Page by Openview-Design, cause that addon manages to 'Undo close tab' AND focus the web page instead of the address bar correctly. Too bad I had to check about a half a dozen addons for such a simple functionality that should be provided right out of the box by every browser...