SEO is one of the more critical aspects for any web site - at least if you want to be found in the search engines. The fact that Drupal is capable of being super SEO friendly is a great benefit. However, it doesn't do you much good to simply know that Drupal is SEO friendly. With modules like SEO Checklist from Volacci you can certainly walk through the myriad of possible SEO options.
In this video, I simply walk through one of the more powerful Drupal SEO modules. The Nodewords module is what allows you to communicate, to your prospective visitors, what your content actually is and why they should visit your site - specfically, via the Description meta tag. If you only get two things from this video; 1) know that you absolutely need to use the Description meta tag and probably Keywords too and 2) use Nodewords to make it happen!