Inc.com has an interesting article on why it's more important than ever to focus on mobile strategy for businesses. Here are some excerpts:
Several companies have a subdomain set up specifically for mobile phones. So, for example, when users type www.ESPN.com into a smartphone, the ESPN site actually figures out that they are visiting the site from a mobile device and redirects them to a subdomain. The user experience from the phone is different than the user experience at a computer.