The idea is pretty simple – whenever you create a new Facebook Page you should also create a corresponding blog on the same subject, ideally with the same name and a matching domain. Then when you post new content you first post the content on your blog and then syndicate the content to your Facebook Page.
You can syndicate the content by using an application like Social RSS or using a share plugin on your blog like Facebook Share.
This tactic has the advantage of creating and growing your own web presence through your blog and you get the benefit of publishing your content on Facebook.
You own the blog and all its content. You also own all the SEO and Google juice.
This is important if Facebook changes its terms of service or decides to restrict or even terminate your Facebook account.