in a presenation.. :-)
From Edu.style
The Great Keynote Meltdown of 2009
It all began at 11:59AM with a simple little post from @mherzber. Nothing major, just an observation about some visual displeasure with the first slide of the second keynote speaker’s Powerpoint on Tuesday. And then it got bad. Very bad. Then worse. And worse. And worse. Both the keynote AND the Twitter backchannel during it. Several people outside the conference caught on and have talked about it, and I thought it might be of value to provide a voice from someone who was there, and explain what happened, how, and why it’s not all bad.
http://doteduguru.com/id3712-the-great-keynote-meltdown-of-2009.html
And the Backchannel...
http://wthashtag.com/transcript.php?page_id=5224&start_date=2009-10-06&end_date=2009-10-06&tz=2%3A00&export_type=HTML