With this feature you can have a list of makes on the hompage. When a user/Search Engine spiders that link, a page can be served up for that 'make'. For example a page about 'Honda', 'Acura', etc. You can either have text with wildcards for the make name (the same text for all pages but just the name of the make changes), or you could have different text for each page, or any combination of the above.
To enable this, look under the 'Link Directory' section in the configuration guide. Once it's enabled, edit app/design/frontend/default/default/template/vaflinks/cms.phtml in your template path. This file controls the templated text for these dynamically created pages