Stumbleupon is a website that provides users with news articles, blogs, images and other content related to their interests. The author chose to review Stumbleupon and signed up with interests including fitness. As a result, Stumbleupon sends the author daily workout posters and images that can be used in their physical education classroom, as well as information on innovative camping gear to share with students. Users can provide feedback on content with thumbs up or thumbs down to further refine their personalized recommendations.