DuckDuckGo recently got 100 Million Dollars in Investment to aid product development. The privacy focused search engine uses bing to leverage the search results but add in the privacy aspects.
This blog is searchable on Bing and DuckDuckGo
On a growth tear, DuckDuckGo reveals it picked up $100M in secondary investment last year
It Finally Happened: Bing (and DuckDuckGo) Surpasses Google



