Footer is an important tool on your site for the internal SEO efforts. Google and other search engines, sees the footer as an authority location of the site, since the info on it, is presented to the viewer on all site pages.

Think of the footer as an additional navigation tool for the site visitor and place the most important pages on the footer together with short brief of the site, like second description.

Footer, like the keywords on he site, the links and the content must be relevant and in the right volume for the user and the search engines.

All the best