Off page optimization is because of link building in its many applications. Lets say you have a website to your site say for example at the foot of an article in the resource container. That is called a tier two link, if you had been to place a video on YouTube and within the description box you placed the get a link from the article (the article that possesses a link to some website) that link would be a tier 3 link. A person see what I'm bothering? I'm merely trying to quickly illustrate the involving ...