Some search engines penalize web sites that use the same keyword over and over on their pages to get a high rank for that keyword, sometimes known as "keyword stuffing."

Penalization might happen by mistake if you overuse your most important keyword on your pages. To avoid getting banned on search engines, make sure that your web pages have the right keyword density.

The right keyword density helps you to improve the search engine placement of your site. High search engine placements lead to more visitors, more customers—and more sales.