Apple has encoded its home page to allow users to search the site with just a tab when using Safari or Omniweb. When you first load up apple.com and press tab, the search box opens, and your cursor jumps straight to it.
Load Up Apple's Home Page
When Your Press Tab, the Search Box Opens
(the image rotated during our screenshots)
As noted above, this feature works with Safari and Omniweb in Yosemite. Our tests in Chrome for the Mac found it didn't work.
Thanks to MacCast's Adam Christiansen for the heads up.