StumbleUpon is a discovery engine (a form of web search engine) that finds and recommends web content to its users. Its features allow users to discover and rate Web pages, photos, and videos that are personalized to their tastes and interests using peer-sourcing and social-networking principles.
Mark Bartels
301 Brannan Street
San Francisco, CA 94107
United States
Garrett Camp & Geoff Smith.
Company Formed
2001
Sources