Your Tags are Important
If you have a WordPress blog there is an input box for tags on your posting page. Many article sites also have a section for keywords for your articles. It is important to use these facilities to their best ability.
The tags box is where you should include the keywords for your blog posts. Search engines use the tags or keywords to help return the most relevant results to their searchers. Having relevant tags and keywords can bring more traffic to your blog or article.
You do not want to sprinkle in keywords that do not relate to the content of your post or article to try to attract traffic. That plan is likely to backfire. If the tags are not supported by the content don't use them.
Doing some keyword research and using those keywords within your content and tags can improve your success with your blog or articles. It is worth the time and effort to get it right.