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Animutation is actually pretty popular in Japan. Sometimes Japanese netizens would make misleading links to animutations such as Suzukisan and Hyakugojyuuichi in a similar fashion to rick rolling. In Japan, Hyakkugojyuuichi is considered a classic flash animation much like it is in the west, perhaps even more remembered.
RWBY is also popular in Japan. Besides fansubbed and fandubbed episodes and fan videos that are uploaded on Nico Nico Douga, Warner Bros. Japan plans to officially release it in 2015.
Homestar Runner: Strong Bad references this phenomenon in his email website, where he says "Who knows? Maybe tomorrow you'll be really big in Pakistan."