I tell clients all of the time about this. If you want to see one of the best models for an optimized site with NATURAL link building, then there is only one place to go!  WIKIPEDIA! I’ve often asked clients, if you do an internet search then which website most often comes up in the first page? Wikipedia! And if you actually want to examine how to properly construct the code of a website to be fully optimized on the page?? Again, Wikipedia. SO, it looks like somebody else also knew this and decided to follow this natural flow and confirm it with link building to wikipedia.  Here it is! The Wikipedia Model! It is a bit complex but it makes total sense.