Google no longer shows the message below the search buttons: it now displays a big blue bar at the top of the page. If you click "no thanks" or the "x" icon, Google will no longer display the message.
Sometimes Google also shows a Chrome ad and it's really difficult to sign in or go to iGoogle without clicking on one of the ads.
Why target Internet Explorer users? IE is the only important browser that doesn't use Google as the default search engine and doesn't even include Google in the list of search engines.
{ Thanks, Sterling. }