Hi, just wondering which I should use?

<link rel="icon" type="image/x-icon" href="/images/favicon.ico" />
or
<link rel="shortcut icon" type="image/x-icon" href="/images/favicon.ico" />


I know that 'icon' is apparently more correct, but is 'shortcut icon' more compatible?

Also... I've read that you can have 32x32 favicons... but everywhere I look people have 16x16? Why is this?

Thanks