Apparantly, as of 9:30 p.m. Eastern tonight on Google Japan Search (news and blog reference) search function, one gets a whopping 4,410 pages, references and what not to the exact phrase "Obama Bow To The Emperor Was Inappropriate" (オバマ氏の天皇にお辞儀は不適切) :
It is going viral here, too. (But many references to this same Kyodo News story. BTW,Kyodo is no laughing matter, folks. Very widespread coverage.)