To fully optimize your website, you can tweak the source code of the page.
Tweak the language until it says what you want it to say.
Is it possible to tweak our genome to remove aging?
You can use this to tweak your website - for example, if "singing birds" is one good term, and "bluebirds" is another, then you may make your site rank jump by grouping the words "singing bluebirds."
The above registry tweak only works on a new drive volume.