Top 10 most popular search engines March 2013:

 

1 | Google

900,000,000 - Estimated Unique Monthly Visitors 

2 | bing

165,000,000 - Estimated Unique Monthly Visitors 

3 | Yahoo! Search

160,000,000 - Estimated Unique Monthly Visitors 

4 | ask

125,000,000 - Estimated Unique Monthly Visitors 

5 | Aol Search

33,000,000 - Estimated Unique Monthly Visitors 

6 | MyWebSearch

19,000,000 - Estimated Unique Monthly Visitors 

7 | blekko

9,000,000 - Estimated Unique Monthly Visitors 

8 | Lycos

 4,300,000 - Estimated Unique Monthly Visitors 

9 | Dogpile

2,900,000 - Estimated Unique Monthly Visitors 

10 | WebCrawler

2,700,000 - Estimated Unique Monthly Visitors 

Google in April 2012: "We believe technology should work for you — to be there when you need it and get out of your way when you don't."

They're rumoured to cost about as much as a smart phone (i.e, between £300 and £500), and are supposedly being developed in Google's top secret X Lab.