You can also just use FireBug and click the DOM tab. You'll see the jQuery object in the global namespace. You can then drill in and and see that it's version 1.1.3.1 (jQuery.fn.jquery).
Mike > For those who don't know how I found that it's a jQuery app, I just > right-clicked on the bookmarklet (after I'd bookmarked it), chose > 'Properties...', and copied and pasted the url into Aptana. Cleaned up a > bit, this is what it shows:
