[chc]

Yes, many knowledgeable people prefer Blekko or DuckDuckGo. But that's "many" in the absolute sense, where "many" people are part of any arbitrary group on a planet of 7 billion.

Relative to the size of the group we're talking about, even among geeks, using DuckDuckGo as your main search engine is rare. It certainly doesn't look like DuckDuckGo has a glut of tech industry leaders using it exclusively — mostly just the odd geek here and there who wants to try something new or who has just decided he doesn't like Google.