with mobile phone, people can judge others nearby, for instance, whether they're sexy.
based on the rate (popularity), you get different service, for instsance, better chair in the rounge, getting an extra cookie when you order a cup of tea. You can judge people around you, and send rating by using mobile phone. (for instance, how sexy they are)
Based on the rating you get by others (popularity), different service is provided, for instsance, better chair in the rounge, getting extra cookies when you order a cup of tea.