The other day after I wrote There is no Web Operating System (or WebOS), I noticed that a few people had bookmarked it in del.icio.us. This is nothing new. From time to time I see people using del.icio.us to save a reference to something I write, maybe jotting down a note or saving a brief excerpt along the way. But I checked back a day later to find that a number of people had saved it (31 at the