Whenever you optimize a page for lots of different keywords, it is hard to make the page relevant to each keyword. You can’t go into a great amount of detail about each keyword, which makes it only somewhat relevant to each word. This causes a problem when you are trying to get a good ranking for your page.
Whenever you choose just one phrase, you can build a better page that is highly relevant. As you can imagine, this is something the search engines really like.
That does not mean your site should only have one key phrase. You can have a key phrase for each page of your site. They will all be related but they won’t be the same. This will give you the most leverage with the search engines. You will be able to use search engine optimization for each webpage, and you will be able to get a site with a good ranking.
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