I tend to customise my browsers according to my needs and one of the most useful tools in my firefox browser is my shortcut search engine bar.
https://addons.mozilla.org/en-US/firefox/browse/type:4/cat:all?sort=name
On this shortcut list I have Google primarily but then others such as: ebay, alexa, dictionary.com,wikipedia, bbc, google alerts, tags, referred pages, stumble upon. So I tend to search within the actual environment I expect to find the information.
However google seems to pretty much be the core of it all. Go to Google you find it all and the chrome browser is making this even more so the case.
As a final note however – please check out http://www.cuil.com the info page is interesting too 
Is Google the greatest or is it just marketed as being so ?
