We present a browser extension to dynamically learn to filter unwanted images (such as advertisements or flashy graphics) based on minimal user feedback. To do so, we apply the weighted majority algorithm using pieces of the Uniform Resource Locators of such images as predictors. Experimental results tend to confirm that the accuracy of the predictions converges quickly to very high levels. Categories and Subject Descriptors I.2.6 [Artificial Intelligence]: Learning; I.2.11 [Artificial Intelligence]: Distributed Artificial Intelligence--Intelligent Agents; H.4.3 [Information Systems Applications]: Communications Applications--Information Browsers General Terms Algorithms, Theory, Experimentation Keywords Advertisement Filtering, Weighted Majority, Interface Agents