# 2 REASON NOT TO BE LISTED IN
Though meta description tags are not a major factor
search engines consider when ranking sites, they should not be left off
When you write a meta description tag, you should limit
it to 170 to 200 characters at most.
You style should be consistent
throughout your pages, with a unique description for each page on
Look Smart has a detailed guide on writing descriptions.
Click and learn about LookSmart description styles.
The Open Directory (DMOZ)
offers detailed guides to writing descriptions.
Click here to learn more about the
Be sure your description adheres to W3C standards and is relevant to the
content of the page. The purpose is to provide a brief summary of the
contents of the page.