A service called "Strategic Purohu", provided by cgiboy.com, a Rakuten company, is quite popular among the Japanese teens. The Strategic Purohu service is all about completing personal profiles. By simply answering the questions given by the service, user completes his/her profile. There are nearly a hundred questions including "What's your dream car?" or "Your favorite song at Karaoke" as well as pretty basic questions. While not all of these questions are mandatory, the more questions a user answers, the more complete the user's profile becomes. So it's like Linked In for teens on mobile, but the content is personal not professional.
Once they have their profile (purohu) pages set up, teens share the page addresses with each other. So there's a certain feeling that this mobile-only service is pretty secure and not entirely open to general public. As such, Japanese teens upload their real picture on their purohu pages - such a rare practice in Japan.
Purohu is a pretty simple yet interesting enough service. It reminds me again that a good mobile service doesn't have to be rocket science.
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