Start Page: the World's Most Private Search Engine with Google results

If you have not yet made ixquick your default search engine (see Matt Bell's post from March 2012), you'll want to also check out https://startpage.com/! Startpage offers you Web search results from Google in complete privacy!  Here's how they do it, in their own words:
Your IP address is never recorded, your visit is not logged, and no tracking cookies are placed on your browser. When it comes to protecting your privacy, Startpage runs the tightest ship on the Internet. Our outstanding privacy policy and thoughtful engineering give you great search results in total anonymity. Here are some of our key features:

No IP address recorded.

No record is made of your searches.

No identifying or tracking cookies used.

Powerful SSL encryption available

• Free proxy surfing available.
• Praised by privacy experts worldwide.
• Twelve-year company track record.
• Third-party certified