Quote from
http://www.w3.org/TR/2006/CR-mobile-bp-20060627/:
Abstract
This document specifies Best Practices for delivering Web content to mobile devices. The principal objective is to improve the user experience of the Web when accessed from such devices.
The recommendations refer to delivered content and not to the processes by which it is created, nor to the devices or user agents to which it is delivered.
It is primarily directed at creators, maintainers and operators of Web sites. Readers of this document are expected to be familiar with the creation of Web sites, and to have a general familiarity with the technologies involved, such as Web servers and HTTP. Readers are not expected to have a background in mobile-specific technologies.