The eight chapters in the free version included an introduction to hiragana, chapters on greetings and a cultural interlude on the geography of Japan.

WSJ: Mobile Apps for Foreign Languages

Zennstrom and Friis hope to charge high enough rates to make up for the limited number of ads, because spots will be targeted to users by geography, demographics and cultural tastes.

FORBES: Magazine Article

We learn which foods are disgusting and which are not through cultural inheritance, which is very much tied to geography.

WSJ: NattO, Maggot Cheese and Other Food That May Repel