Ad revenue powered donation websites – answer questions correctly and the site donates food to charity

I like this idea. There used to be a site called free rice that used to do a similar thing, not sure if they still do it as the site has since changed. It would be good if say, Save The Children had a sister site with quizzes for kids and adults, that generated and donated any ad revenue it gained. Do things like this still exist? Add the link if they do, I love doing quizzes and especially if someone else benefits too.