it depends entirely on how you format your URLs and what platform you're using. If you're using Wordpress, you can click on the edit buttonnext to the URL while you're editing the article to change the URL. You can have a slug that looks like "www.yoursite.com/article-about-keyword/", so you don't have to change it to "www.yoursite.com/keyword".Thanks guys...
Also, how do I actually add my keyword to the URL?
I thought if you named the article title something, thats what would show up in the URL... I'm wrong?