Here's a cool MetaFilter thread I found via Jason: the discussion is interesting, but, more than that, the discussers are interesting. Someone puts up the link and eventually the author (with a pretty low user number, though not as low as mine :-) comes along and adds his two-cents. Then someone else comes along and dishes what the inventor of email is working on from a recent personal conversation. Cool. That's what you get sometimes on MetaFilter.