Mobile Web use is increasing with the new generations of exciting mobile devices. Designing Mobile Websites is all about creating a satisfactory user experience when limited to a small screen and awkward input.

Do you really need a Mobile Website? I would say, “Identify your market”. If you think that the market segment you are targeting are mobile users or the kind of product or service needs mobile browsing, then mobile website is an answer for you. The great example for a mobile website is “Google Maps”.
http://www.google.com/mobile/maps/

For obvious reasons, one would use Google Maps more when they are on move. Here the mobile website for Google Maps is the answer.

Same goes for http://wapedia.mobi/en/, Mobile Encyclopedia