3 Priedhorsky, R. Masli, M. Terveen, L. 2010 Eliciting and Focusing Geographic Volunteer Work 2010 Conference on Computer Supported Cooperative Work Savannah, GA, USA Association for Computing Machinery 02/2010 wiki, geowiki, open content, geographic volunteer work, volunteered geographic information, collaborative computing, computer-supported cooperative work, web-based interaction