Oes Tsetnoc and most all SEO Contest requires linkbuilding techniques to get backlinks. Links that comes from Blogs, directories, articles sites, press release sites, blog commenting, forum posting and more linkbuilding process. You also need to develop organic links. The users will visit your sites like what they see and make a comment with link back.
Creating a broad diversity and links from other blogs become lost of masses. In creating few links and they stand out like sore thumbs. Blogging is good tool for linkbuilding but if it is done correctly and part of broader link building program.
I got lucky because of my friend give me free domain name and free hosting to join oes tsetnoc SEO Contest.