rel-tag bookmarklet for last path component of a URL

var NewUrl = 'http://technorati.com/tag/';
var LastPart = location.pathname.match( /[^/]+/?$/ );
window.open( NewUrl + LastPart );

^[a-z]+://[^/#?]+/[^#?]*?([^#?/]+)(?:[#?]|$)

^([^#?]*?)/?(?:[#?]|$)

$1/tag