Questcrowd: a location-based question answering system with participation incentives

We present QuestCrowd, a location-based system that uses crowd-sourcing to answer simple day-to-day questions. QuestCrowd supports realtime questions along with questions that can be answered using factual information by people not present at the location. Key design mechanisms that set it apart from similar location-based systems include (i) a reputation system that motivates quality contributors by rewarding high quality answers (ii) a forwarding mechanism that leverages existing social graph relations to increase participation.