Online social networks have become extremely popular; numerous sites allow users to interact and share content using social links. Users of these networks often establish hundreds...
Bimal Viswanath, Alan Mislove, Meeyoung Cha, P. Kr...
Previous research has shown that older adults performed worse in web search tasks, and attributed poorer performance to a decline in their cognitive abilities. We conducted a stud...
Jessie Chin, Wai-Tat Fu, Thomas George Kannampalli...
Human interaction proofs (HIPs) have become common place on the internet due to their effectiveness in deterring automated abuse of online services intended for humans. However, th...
Kumar Chellapilla, Kevin Larson, Patrice Y. Simard...