Its good for a site to be wc3 compliant as is the standard with the most browsers. Well if a site is not according there is every possibilty that site may develop browser compatible issues. In the interest of a site user its best to compile HTML code that confirms to wc3 standards.
Right, it is best to be compatible with those standards. But in my own experiences, it is hard to achieve such object if you use dynamic techniques in building your sites. Thanks,
[FONT=Verdana, sans-serif]One of the reason why we need to follow the standards of W3C is because not all people are using a same browser. Let's say 50 percent of people use a Firefox, 30% of people use Internet Explorer and remaining 20% is using a different browser.[/FONT]