Human nature being what it is, we are always looking for that little extra edge, the shortcut that will get us ahead of the rest. SEO is like an Olympic sport, you can train hard, put in the extra work; and, if everything comes together on the day, you can strike gold. You can of course try a few short cuts. EPO or a similar performance enhancing substance. Rather that training harder, you let the chemicals do it for you. In SEO, this is known as 'black hat' techniques.