Hey, that's neat. Maciej Ceglowski and Joshua Schachter (founder of del.icio.us) are good friends. I recall what must have been five years ago when they would hang out on Freenode arguing how to design various projects like LOAF (http://loaf.cantbedone.org/about.htm#authors) and I'm sure del.icio.us. It'd be amazing to see some of that energy again in practice. My best wishes to this project.