The biggest takeaway may be that programmers sometimes don't have to do anything -- unprotected music and video in common formats are usually shareable as a matter of course, and it's only with photos or complicated conditions like playlists that a "contract" is needed to reach another screen or speaker.
Election.com tabulates all the votes and presents them to the convention manager, who displays the results on the jumbo television screen above the speaker's podium the convention web site, Dems2000.org.
And we have the Power Point Triangle of Death, where the speaker moves to the screen to point out some illegible word, drifts back to his computer, while mumbling something about the next slide, only to come to the third point of the triangle floating somewhere uneasily in between his screen position and his computer position.