It's MSN (Score 1)

At work, where I am forced to use Windows and IE, if you make a mistake on the address bar, you go to the Error/MSN search page, rather than a blank page like on another browser. Typing into the Google bar avoids the Big Brother Microsoft aspect of that, and gets you one click away from your site on Google.

Or people are just lazy. That ".com" can take a lot out of you.