There are SEO methods that increase your page rank and there are SEO tricks that further boost your ranking. Seldom used, you should take advantage of this trick. Once everybody does it, you loose the edge.
It is common knowledge that using the right keywords can boost your page rank. The trick like is misspelling your keywords on top of having the correctly spelled ones. If your keyword, for instance is “audiophile music,” you can have articles on your pages with misspelled “audofile music” or “audiophile musc.” Get at least 5 misspellings of the phrase which you think are common errors that people could make in searching for this topic. So when surfers mistype it on a Google search, your site gets to land first page. This trick is often called TYPO among SEO circles.