2012/9/4 Mike Dupont jamesmikedupont@googlemail.com
http://www.tineye.com/ and others http://www.makeuseof.com/dir/whostolemypictures-find-duplicate-pictures-onli...
Thanks. Tried the plugin but the results were not very good. However, found this Chrome plugin: https://chrome.google.com/webstore/detail/dajedkncpodkggklbegccjpmnglmnflm. It gave me [a lot] better results (just in case someone is looking for a similar tool). I was thinking in making some kind of script to auto-check categories, but I don't think that would be reliable/useful as a human should still check the results :S.
@Lodewijk: Thanks for the suggestions.