DuckDuckGo has recorded a 600% rise in traffic enjoyed in the wake of the Edward Snowden revelations two years ago.The site, which does not track user data, now handles some 3bn searches a year – although that is only about the same volume that Google processes in 24 hours.
http://www.theguardian.com/technology/2015/jun/17/duckduckgo-traffic-snowden-revelations