I am a huge fan of del.icio.us, so I decided to check out their millionth user / birthday bash at the Yahoo campus (many photos here). I had a chance to briefly chat with Stephen Hood (a product manager at del.icio.us), Les Orchard (del.icio.us engineer), Flickr co-founder Stewart Butterfield, Salim Ismail (co-founder of PubSub), and Jeremiah Owyang.