The document provides guidance on link building strategies for 2013. It recommends setting up author profiles on platforms like Google+, Facebook, Twitter, and LinkedIn. It also recommends creating video profiles on YouTube, Dailymotion, and Vimeo. Additionally, it suggests writing unique, newsworthy content focused on main and long tail keywords, and using that content across web 2.0 sites, article directories, social bookmarking sites, and guest posts to build natural backlinks. The goal is to build a diverse link profile with different anchor text to rank well in search engines.