Google yeah google if you need to search you need google! I heard people who need to do research online from their computer either at home, office or at school they prefer to use google.
Google suggestion search box captured from Firefox browser" width="231" height="216" />
With google, I can just type the leading keywords or few words then they suggest me more to choose from and most of the time I choose to go my own 
The screenshot captured, I made it from Firefox browser that I use it often at work with my 19′inch screen computer. It is funny sometime when I type the word into the search box the suggestion just weird to me because they know exactly what I am looking for.
What is your prefer search engine for the past 3 months?