Abstract
Onegai is a location-based photo sharing service for mobile devices. We chose the name 'Onegai' (it means 'please' in Japanese) as the unique sharing model offers users the possibility to define their requests of information to each other. This work is motivated by the fact that there is a lack of possibilities to reflect the receiver's wishes when the sender is capturing or sharing information. This informational asymmetry may result in unnecessary or annoying information for the passive receiver. We suggest that 'demand-driven sharing' is a good alternative to existing sharing practices and tested the concept in a case study. We will discuss how the users have adopted our prototype in their social practices. In particular, we have observed a highly altruistic culture in users' interaction using Onegai, which is barely seen in today's social media landscape.
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