Should Businesses Have Mobile Friendly Websites?

cellPhoneSafe: "A client of ours has asked us to develop a mobile friendly version of their website. Their CEO has a Pocket PC and his browsing experience of his site is not great. However, aside from keeping him happy, is there a business case for a mobile friendly version of his site? Is there actually any volume of web surfers using a Pocket PC, Palm, or other web-capable pocket devices? It's one thing to convince a client of the benefit of supporting Mozilla (else they'll loose 10% of potential customers), but how do the figures stack up for mobile users? To be honest, I'd be surprised if mobile users accounted for more than 1 in a 1000 visitors to a site, so I'd be interested in your experiences. Have you developed a website for mobile users? Were you overwhelmed with new customers? Did these mobile users expect a different service offering to traditional PC users?"