Many people who start learning SEO come across the term keyword difficulty and feel confused about what it really means. Keyword difficulty is simply a score that shows how hard it may be to rank a page on search engines like Google for a certain search phrase. When many strong websites already rank for that keyword, the difficulty becomes higher. For a new affiliate site, it is usually better to focus on keywords with lower difficulty. This makes it easier to appear in search results and slowly build traffic. How do others normally choose keyword difficulty when planning content topics?