Ok, folks. I'm gonna throw out this line, what the heck...
Was on a panel for a conference. Presented my paper, but ended up also "chairing" the panel as the panel chair never showed. There was no contact with the panel chair before or since, from either end, though there was of course contact with the larger organizers who were informed.
Classifying as "chairing" experience -- "officially" yay or nay?
I think I know the answer, I'm just gonna see if I can attract some crazy fish... ;-)
If you were specifically invited by the conference organizers, I see no reason not to include it under "Professional Service." But it's not going to make a difference, I predict.
--Crazy Fish