Microsoft Firefox Default?

"Interesting bit: when you just enter “http” into the Firefox address bar and press enter, it will take you to the Microsoft homepage. This might sound like fodder for conspiracy theories, but what actually happens? The answer is simple: if you do not use a full URL, Firefox will start its default search function. And searching Google for “http” has Microsoft.com as first result (Google heavily weighs in link text into their ranking calculation, and many people use “http://www.microsoft.com” as link text). And of course, entering “about:mozilla” into Firefox is fodder for yet another conspiracy theory..." (Google Blogoscoped)