What is the best link building method on the busby seo challenge?

In finding for the best link building method on a seo challenge of the busby seo challenge. I have joined to this seo contest and I'm very hardly to find the best method of link building is the most effective on this seo contest. There are many ways of link building strategies but I need for the best techniques. This is my entry http://www.camalaniugan.com ready to win on the busby seo challenge where many guro, webmaster and seo specialist joined on this seo challenge.