Yoast's SEO plugin @
Wordpress, I can provide one search term per post, which is the key term, the focus term (don't know the English word for it). I am wondering what this keyword does...
I don't see, if I fill it in, a thing related on it on my page source and I don't know what it does or what it should do.
For example, I have a post called
"Hello World" and I put in the key term:
hello... What should Google do with this? Does it give priority? Does it do a thing or solely nothing? Can someone explain this to me? Because right now I have not filled in these fields, because I thought that it was unnecessary...