Egosearch-ing
A bit not too useful at first sight but proves how powerful can be an ajax powered search engine. As I understand, this looks for the query string you give, related to the url's you provide, and then returns you a number of ego points. For example, this is the result of searching for Soledad Penades and www.soledadpenades.com. Of course, the most ego points you have, the more your ego grows (or the more pages are linking to your pages, in other words).
And it has a very nice implementation... works fabulously with Safari (which is not quite often with most of the ajax applications I have seen to date).
Have a try! Ego surf!
(Found via ajaxian)