Danny Sullivan over at Search Engine Land has a post entitled comScore: Google Wins Again & IE7 Doesn't Stop Microsoft's Slide where he writes
It's that time again -- search popular stats for last month are coming out. Actually, Hitwise sent me their figures earlier this month but I'm diving in with the comScore figures that just came out. The main real news is despite the Internet Explorer 7 launch, Microsoft's Live continues to show a drop in usage.
What is puzzling to me is that people thought that the release of IE 7 would cause a increase in search share for Microsoft's search engine and a decline in competitors. The fact is that built-in search boxes within the browser encourage people to treat search as a feature of the browser instead of a site they visit. That means that the defaults built into the browser/operating system are important. But what exactly is the default search engine on most PCs running IE 7? I don't have any hard numbers but here's some data from my post about this entitled Competing with Google is Like the War in Iraq which stated
The combination of the proliferation of search toolbars and a new generation of Web browsers with built-in search boxes (e.g. IE 7 and Firefox) have reduced the need for users to actually go to websites to perform a search. This means that it is now very important to be the search engine that is used when a user enters a search directly from their browser. Guess which search engine is the one used by your browser if you Are you a user of the Firefox browser?Are you a user of the Opera browser?Are you a user of IE 7 and have installed Adobe Acrobat?Are you a user of IE 7 and have installed the Java runtime?Are you a user of IE 7 and have installed the WinZip archive utility?Are you using a newly purchased Dell computer?Are you a user of the Google Toolbar? Yes, the answer is Google in every case. So even if you are an Internet n00b who hasn't made up their mind about which search engine to choose, there is a large chance that the default search engine you end up using thanks to recent innovations in IE 7 and Firefox will be Google.
If anything, browsers like Firefox and IE 7 make it harder for users to switch from Google not easier because it gets them away from the notion of visiting websites to perform searches and instead they just accept whatever default the browser provides.