@book{Takhtamysheva2011a,
	abstract = {Conducting surveys is a costly and time-consuming process. We developed a playful questionnaire that addresses the issue of motivation for voluntary participation. In addition, distributing playful questionnaires on Facebook gives access to basic user data, which may allow employing some of them as quality control questions or simply help to lessen the number of questions.},
	title = {Serious Questionnaires in Playful Social Network Applications},
	author = {Takhtamysheva, Aneta and Krause, Markus and Smeddinck, Jan},
	booktitle = {ICEC'11 Proceedings of the 10th Inernational Conference on Entertainment Computing},
	doi = {10.1007/978-3-642-24500-8_60},
	year = {2011},
	papertype = {fullpaper}
}