By Aaron Wall and Andy Hagans. Link Building... Time-intensive. Frustrating. Sometimes confusing. Yet Unavoidable. Because ultimately, it's still the trump card for higher rankings. Many of us have been hoping that it would go away. In Brett Tabke's 5/18 Robots.txt entry, he echoed a sentiment that many, many webmasters hold on to as a hope: What happens to all those Wavers that think [i]Getting L