With WordPress v2 came a change to the WordPress Bookmarklet. It no longer opened in a small new window, instead it opened in the same window you wished to blog about. :! Not that helpful if you wish to reference the original article to collect quotes etc.
Be sure to change http://www.example.com/ to your website plus wordpress directory if not in the root. You can also change width=600,height=460, to increase or decrease the size of the Bookmarklet window. :)
Works a treat!