[Hardik_Shah]

Densely packed text, a busy layout, tiny low-resolution images, cute characters, and the use of flash animation are some of the distinguishing features of a Japanese web page. These features that distinguish Japanese websites are due to a variety of factors that are linguistic, cultural, and technical in nature.

[fouc]

I always wondered if part of it was due to japanese smartphones.

[selcuka]

That is discussed in the article.