Here’s a really nifty, Ajaxian alternative interface to del.icio.us, a fantastic service in almost all respects, but one whose UI leaves a bit to be desired if you ask me. Even niftier is how the thing is implemented: It’s all done on the client side using a bookmarklet that overwrites the standard HTML page and uses XMLHTTPRequest to populate a richer version, a bit like Greasemonkey on steroids. The dependence on the bookmarklet is a nuisance, but the result is well worth it. (Via LifeHacker.)