One of the stranger aspects of this year’s show is meeting people you previously knew only through Twitter. It would’ve helped if they’d worn a sign that read "#acquaintance," because it takes a minute to place someone when they're freakishly using their real nam, not their Twitter ID. Having a microscopic picture as a reference point isn't a huge help, either.
Fortunately the conversations haven't come in 140-character bytes.
In one instance I looked up to realize I was sitting two rows behind a new follower during a presentation.
She and I were of course both tweeting.