For fully private searching, head to Ixquick and its sister site, Startpage. These do not record IP address or track search queries. The only cookie it uses is to save search preferences you set up.
Ixquick used to search several engines at one time. These are no longer shown as choices but stars on results indicate Blekko, Gigablast, Yahoo as current sources. Some grouping is still available by selecting Power Refinement on the Settings page – it “enables clustering of shown web results”.
Startpage forwards your query to Google – without your IP number – and returns results free of the personalization that Google applies.
“Search Suggestions” is an option on the Settings page for both. Ixquick doesn’t use a log of user queries as other engines do, but picks from broad resources on the web such as dictionaries or common pages.
Other security features include secure socket layer, and not passing search terms to websites.
Usage of Startpage climbed to 2 million queries a day in mid-2012.