Then again, maybe it's just that we're not noticing how much of everyday off-line discussion *could* be "age-neutral" -- but just *isn't*, presumably because IRL, you'd _see_ each other's wrinkles or pimples, and then for some reason the discussion never gets started.

Sometimes, like when there just doesn't happen to be anyone of a more "appropriate" age around, it does happen anyway; ever had one of those long conversations, about pretty much anything, with a stranger on a train?

(Yeah, wonder why Rob, of all people, took delight in that... :-)