If several pages are linked to each other, but don’t link to other pages, you can call it a walled garden. However, if these pages appear in the sitemap, the search engine can still index them. Beware; the page rank for those pages will be very low though.
White Hat SEO
This SEO method purely follows best practice guidelines and SEO strategies. This is the opposite opposite approach to Black Hat SEO.
This is one of the most popular free blogging platform for any user.