• by Gavin O'Malley , Staff Writer @mp_gavin, June 9, 2009

That's what Tania Yuki -- “Measuring Video and Virality” panel moderator, and director of product management at comScore -- want to know.

(We actually thought it was a term the industry had collectively agreed to stop using.)

“Video that everybody’s talking about,” says Andrew Budkofsky, SVP Sales and Partnerships, Break Media.

“Video that’s being shared,” says Scott Ferber, chairman and CEO of TidalTV.

What makes a video viral?

“We don’t have a good answer for that,” says Brian Shin, CEO, Visible Measures.