Basic Tips for Webmasters

from: http://www.w3.org/QA/Tips/

title: the most important element of a quality Web page
Don't use "click here" as link text
Use standard redirects: don't break the back button!
Use h1 for top-level heading
Use the alt attribute to describe the function of each visual
Don't forget to add a doctype
Use tag link in your document
If You Pick One Color, Pick Them All
Care With Font Size
Use international date format
GIF or PNG?
Use headings to structure your document
Choose URIs wisely
Managing URIs
Beyond Validation
Use class with semantics in mind
Unordered lists: more than just bullets