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seen Jul 6 '12 at 8:54

May
28
answered How to implement a system to hide spammed user content?
May
28
comment Prevent Click Fraud in Advertisement system with PHP and Javascript
Using Machine Learning algorithms, you could improve your click-fraud detection. Support Vector Machines are probably the best bet in your case. After a quick search on Google I could find this paper: dl.acm.org/citation.cfm?id=2020471, from the abstract sounds good.