Don't Take Security Advice from SEO Experts or Psychics
As best I understand it, one of the most effective SEO things you can do is to repeat all the important words on your site down the bottom of the page. To save it from looking weird, you make the text the same colour as the background so people can't actually see it, but the search engines pick it up. Job done, profit! I think this is the way we did it in 1999. I don't know, I can't recall exactly, but I know I don't know and I'll happily admit to being consciously incompetent in the ways of SE...