In China (and around the world among China watchers), everybody's talking about this ungainly syllable. "Duang" surfaced less than a week ago, but already it has been used millions and millions of times.
"The Word That Broke the Chinese Internet" (2/27/15) by Bethany Allen-Ebrahimian
"'Duang' is Everywhere on the Chinese Internets, Here’s What It Means" (2/27/15) by Charles Liu
"Chinese netizens just invented a new word, and it's going insanely viral" (2/28/15) by Ryan Kilpatrick (English text part of the way down the page)