Someone commented to me about not understanding why this was such a huge hit in Japan right now, and that it didn`t make sense that so many Japanese blogs were associating this cheerful jingle with the earthquake and tsunami...
It sort of prompted me to post this.
It`s become a bit of a meme, but more widespread than just the internet. ポポポポ～ン is recognized by pretty much *everyone* in Japan now. There was even a video (of course I can`t find it now... *sigh*) of children in one of the evacuation shelters acting it out while singing.
On the net side, people have been making remixes of it, and different "versions" - for example
this one.
There is also a flash page to play around with it... Though it`s so incredibly popular that it`s down half the time.
http://azflash.net/az/fla/popopopon.swf