One of the things Google looks at when ranking a page is the content on that page. It looks at the words on the page. Now picture this, if every word on, for instance, a blog post about a digital piano is used 2 times, then all words are of equal importance. Google won’t have a clue which of those words are important and which aren’t. The words you’re using are clues for Google; it tells Google and other search engines what the page or post is about. So if you want to make Google understand what your page is about, you need to use it fairly often.
Basically, SEO keyword research should be an ongoing and ever-evolving part of your job as a marketer. Old keywords need to be reevaluated periodically, and high-volume, competitive keywords (or “head” keywords, as opposed to long-tailed keywords) can often be usefully replaced or augmented with longer, more specific phrases designed not to bring in just any visitor but exactly the right visitors. (Who visits your site – particularly if they’re people who are actively looking for your services – is at least as important as how many people visit.)
Wow! This was so helpful to me. I am new to the blogging world and have been feeling really frustrated and discouraged because I lacked the knowledge of getting my post to rank in search engines. I know there is a lot more I still need to learn but this has layed a foundation for me. I am bookmarking it so I can return and read it again. Thank you for writing!