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1.
Pretty much China's version of YouTube, but hella slow because of all the filters & crap the Chinese government enforces on its networks.
Don't even try to watch a bootleg on "Youku"; it'll take 3 months to load.
by weorls July 10, 2008
 
2.
The bootleg,chinese version of Youtube.
Tom: Hey wing, lets watch some youtube vids later.

Wing-lei: Are you mentally retarded? i only watch on youku.
by Pseudonymforever May 15, 2009