The word "intent" has become the latest buzz around understanding how search engines determine link relevance. David Harry reminds us that each search engine defines "intent" differently. An algorithm looks for elements common to those manipulating the index via links, and it's up to the engineers to decide what to do with pages and sites, he explains. Authority, temporal factors, anchor text anomalies, document ranking and relevance, excessive reciprocals, TrustRank and harmonic rank, page segmentation and humans all come into play when search engines determine relevance. Harry steps through each to explain how they work and contribute to …