Don't misspell your keywords in your content

It can be very tempting to try to optimize your site for misspellings. And while it won't hurt your site in the search engine rankings - especially if you decide to use the misspelled version as your keyword phrase to optimize on. It will hurt your credibility with your customers. For every one person who misspells the word, there are at least two to three who know the correct spelling. And if they end up on your page for some reason, they will just think you are unprofessional. Plus, many browsers and search engines have spell checkers built into the forms, so the popularity of misspellings will continue to lessen as time goes on.