A successful SEO campaign almost always relies on the keywords used. As elements that search strings are matched against, they can propel a website forward, helping it rank on search engines. The significance of individual keywords, however, is slowly dwindling, and keyword-based search engine optimization is losing its strength. Blame it on black hat practices that, even when they're being cracked down, have left lasting effects. This is because there are now factors that are far more important than keyword presence:
• Keyword placement matters more than usage frequency. That is, using keywords in the title tag and header has more weight than using them five times in the content.
• Using synonyms is more than acceptable. Now that Google is more sophisticated in interpreting data of a website, keyword specificity is fading. So even if different key phrases are used, as long as they have similar context, Google can place them in the exact same category, theoretically.
• Semantic search is making a huge difference on user searches. In the past, Google dissects search queries by words. A search query about "running shoes Utah", for example, would return anything that may be related with running, shoes and even events in Utah. But with search semantics, Google interprets the meaning of the whole search query rather than just the individual words.
Along with these changes is the need to take a different approach to keyword research. Keywords still matter, but they need to be perfect to be really effective. So whatever process you have been following for as long as you can remember, you should completely forget. Even if you did rank, it turns out that you have been doing keyword research all wrong. Rather than research for high volume, low competition and good CPC keyword, or effective latent semantic index keywords, you should use keyword difficulty analysis instead.