When deciding what to add to the content of your website, its important to keep in mind the search terms you are promoting to attract visitors.
If your website offers professional resume services, it would not do well to discuss dog collars.
You may get an increase of visitors, but not people looking for professional resume services.
Targeting content to your audience is very important for sales and building a community.
Whenever possible, use the keyword phrases you believe prospects will use to find you in search engines. If your website is about printing services, use words and phrases related to printing when possible, reflecting your site’s topic. Also include keywords, when possible, in your headings (h1-h5 tags) and title tag.
While you are adding keyword prases, make sure the quality of the content still remains intact and avoid "stuffing" keywords into your content. If search engines identify "keyword spamming", your site can get be removed from search results or moved down the list.