Glow: is it single sign-on for everyone?
Stephen Downes and I agree on one thing: if I we can't have single sign-on for our whole online identity (Flickr, del.icio.us, YouTube, Bebo, my work and gmail and home accounts), then you can't really get away with calling it single sign-on. It's more "a-few-less-sign-ons". Glow's a great step in the right direction but I hope that, before too long, someone can tie up both ends of my online life.
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