However, one method is likely to get your website banned on search engines and recent developments indicate that websites that use that method will be in trouble soon.

What is white hat SEO?
White hat SEO means that the webmaster doesn't try to trick search engines. White hat SEO means playing by the rules. Web pages that are created with white-hat SEO methods are beneficial to web surfers, search engines and webmasters.

What is black hat SEO?
Black hat SEO attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception. These methods include cloaking, doorway pages, hidden text, etc.

Google and other search engines have made it clear that they penalize websites that use black hat SEO methods when they detect them.

Black-hat SEO methods seem to work. So why not use them?
Nearly all black-hat SEO methods have been detected by search engines sooner or later. Javascript redirects or doorway pages used to work in the past but nowadays, these methods are usually the ticket to the land of banned websites.

The problem is that things that cannot be detected by Google now might be detected by Google tomorrow. And Google might also be able to find out what you did in the past. Don't use black-hat SEO methods. As technical possibilities evolve, it's very likely that these methods will be detected even if you don't use them anymore.