Some good points in David Pogue’s latest Circuits column in the New York Times, about how much there is left to do with what we call "Web 2.0." He writes about how there should be a social web that updates people about the latest flu virus or bug going around (although there’s kind of something like that already — too bad the domain name Sickr.com is taken by some German outfit), and about how there’s a British site that allows people to set up civic petitions of all kinds and vote on them. Some good business ideas in there.