DBpedia. As users’ interaction with the game is recorded the result may be used to improve the ranking of triple data in Semantic Web applications as well as find errors in Wikipedia/DBpedia. The background scientific paper is WhoKnows? – Evaluating Linked Data Heuristics with a Quiz that Cleans Up DBpedia. Last author Harald Sack is presently on the top of the high score list. Another of their Facebook quiz applications is Risq.