Although web standards is a standard … somebody still do not want to follow for some reasons. For this reason, I found some strong aguments why we should follow the web standards:
1. Ease of distributed development: you do not have to explain yours own “standard to each others.
2. Quality control: the standard is verified.
3. Low-cost induction and training: no need for further training of self-own “standard” as every one following the same standard
4. Predictability of product output: browsers may not support non-standard code or may misbehave
5. Ease of re-use and conversion: structured HTML without any presentation markup can be converted to other formats via XSLT or XSLT-FO or be imported into some software like MS Word or Excel without any other actions.
6. Search Engine Optimization: properly structured HTML ranks higher in search engines
7. Higher maintainability: using CSS to control layout let you remove, insert or edit presentation-free content easier.
I’m sure the above reasons could convince you to follow the web standards. The details supporting / article of the above arguments can be found in the following website:
http://www.456bereastreet.com/archive/200512/ten_reasons_to_learn_and_use_web_standards/
http://icant.co.uk/webstandardsforbusiness/pmwiki.php/Main/Arguments