For the sufficiently paranoid, DuckDuckGo is available as a Tor hidden service: 3g2upl4pq6kufc4m.onion
They also run a Tor exit enclave for DDG searches, so using https over tor for DuckDuckGo searches should provide about as much anonymity as you can get doing search engine queries.
They also run a Tor exit enclave for DDG searches, so using https over tor for DuckDuckGo searches should provide about as much anonymity as you can get doing search engine queries.