Link Building has gained importance in the recent years, for your website to rank high in search engines, especially Google. But it is important that the links that point to your websites are safe and legitimate else they may have negative effect on your website's ranking. Here is an excellent resource to learn the link building phenomena, apply it and rank well. The owner of the PointBlankSEO, Jon Cooper, is one of the most renowned personalities when it comes to link building!! So learn the tricks and get started. You may offer it as a service on freelancering sites and earn few hundred bucks per month doing just the link building.