I take your point and agree that it might be difficult to track down evals from all the code camps that are occurring all over the place.
FWIW, I see that one of the goals in the Code Camp manifesto is that presenters should receive no extra reward apart from their contribution to the community.
;-)
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1