For those of you still using Internet Explorer I have created a Custom Button for the latest version of your Google Toolbar. As well as being able to search this site with a single click, it also hooks into our RSS feed which will give you a similar dropdown menu to Firefox's LiveBookmark feature. You can get the button here:
Firefox's Google Toolbar does not appear to support custom buttons just yet. For those IE users looking to upgrade to "a better browser", follow the Firefox download link at the bottom of the page.