> IEEE 802.11 / 802.15 meetings have solved this by attaching a helium > ballon to their equivalent of the blue sheets. That way everyone can > see where they are and if they have gotten hung up.
That's a fun solution to the more general problem of slow blue-sheet propagation. For the name harvesting attack, my favorite idea (perhaps for no better reason than because its mine) is peel-off numbered (or bar-coded) labels on the backs of the badges, to be affixed to the blue sheet. The secretariat, of course, would have the number-to-name mapping.
