Criteria Explanation
C4. Appropriate use of Language
Let us assume you have designed a professional looking website for a big company, the theme you have used is of a corporate nature and they intend to market their product and/or services to other companies. Based on the above profile, visitors will expect professional, proper and correct use of the site language.

Beware: use "you have" instead of "you've" and "do not" instead of "don't". These differences are barely visible to the ordinary visitor, but are really appreciated! Also, do not use "slang" or "uncultured" language anywhere in your content. Apart that it may not be understood in some parts of the world, it also appears to be unprofessional in many respects.