To post a web-page to Google Buzz profile, just drag this bookmarklet to your bookmarks toolbar:
+ Buzz IT :)
and modify (Properties->Location for Firefox and Edit->URL for Chrome) by
javascript:(function(){javascript:window.open('https://www.google.com/buzz/post?url='+location.href,'GoogleBuzz','width='+(screen.availWidth/1.8)+',height='+(screen.availHeight/2.5)+',resizable=yes,scrollbars=yes,screenX='+(screen.availWidth-0)+',screenY='+0);})();
Enjoy :)