Animated CAPTCHAs and games for advertising.

@inproceedings{aggarwal-2013-animated, author = {Suhas Aggarwal}, editor = {Les Carr and Alberto H. F. Laender and Bernadette Farias L\'{o}scio and Irwin King and Marcus Fontoura and Denny Vrandecic and Lora Aroyo and Jos\'{e} Palazzo M. de Oliveira and Fernanda Lima and Erik Wilde}, title = {{Animated CAPTCHAs and games for advertising}}, booktitle = {{22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume}}, pages = {1167--1174}, publisher = {International World Wide Web Conferences Steering Committee / ACM}, year = {2013}, url = {https://doi.org/10.1145/2487788.2488145}, doi = {https://doi.org/10.1145/2487788.2488145} }