Web standards are carefully designed to deliver the greatest benefits to the greatest number of web users while ensuring the long-term viability of any document published on the Web. Designing and building with these standards simplifies and lowers the cost of production, while delivering sites that are accessible to more people and more types of Internet devices. Sites developed along these lines will continue to function correctly as traditional desktop browsers evolve, and as new Internet devices come to market. 
Ever have trouble getting your Internet Explorer-specific Web applications to work with Mozilla? This article covers common issues associated with migrating applications to the open source Mozilla-based browser.