StumbleUpon » Welcome to StumbleUpon StumbleUpon is the best way to discover great websites, videos, photos, blogs and more. Channel surf the internet and get personalized recommendations according to your interests. Keep an online history of your Stumbles, and rate, review and share all the cool things you find. StumbleUpon is a discovery engine that finds the best of the web, recommended just for you. with system:unfiledby 149 users