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The Art of SEO

The Art of SEO

Mastering Search Engine Optimization (Theory in Practice)
by Eric Enge 2009 608 pages
4.1
500+ ratings
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Key Takeaways

1. Links are the cornerstone of search engine rankings

Links are the main determinants of ranking behavior.

Links are multidimensional. They influence rankings, determine crawl frequency and depth, and convey trust. Search engines use links to discover web pages and count them as votes for those pages. The strength of inbound links affects how often and deeply a site is crawled. Link context (location, anchor text, surrounding text) is considered when determining relevance. Links can also help overcome potential spam designations, which is crucial for SEO success.

Link building is essential. Unless you have an extremely powerful brand that naturally attracts links, you will fail without active link building. It's a fundamental part of SEO that should never stop. Link building is an ongoing process that requires continuous effort and should be integrated into your overall marketing strategy.

2. PageRank: The original algorithm for evaluating link importance

In simple terms, each link to a web page is a vote for that page, and the page with the most votes wins.

PageRank basics. The algorithm, developed by Google founders Sergey Brin and Larry Page, assigns a small amount of innate PageRank to every page. Pages can increase their PageRank by receiving links from other pages. The amount of PageRank a page can pass on is less than its total PageRank, represented by a function f(x).

PageRank distribution. When a page links to multiple pages, its passable PageRank is divided among them. This creates a complex system of PageRank flow, especially with reciprocal linking. The original algorithm treated internal and external links equally, which led to the concept of "PageRank leaks." Google has since refined the algorithm to address this and other issues.

3. Anchor text plays a crucial role in determining page relevance

The impact of anchor text can be quite powerful.

Anchor text significance. Search engines use anchor text to understand what the linked page is about. This is particularly important for pages with limited visible content, such as Flash sites. The power of anchor text has led to practices like Google Bombing, where coordinated linking with specific anchor text can make a page rank for unrelated queries.

Balancing anchor text. While anchor text is a strong ranking factor, it's important to use it naturally and diversely. Over-optimization of anchor text can be seen as manipulative by search engines. A mix of branded, generic, and keyword-rich anchor text is generally more effective and less likely to trigger spam filters.

4. Link relevance and authority are key factors in search rankings

Links that originate from sites/pages on the same topic as the publisher's site, or on a closely related topic, are worth more than links that come from a site on an unrelated topic.

Relevance matters. Search engines evaluate the relevance of linking pages in the context of specific search queries. Links from topically related sites carry more weight than those from unrelated sites.

Authority and hubs. Search engines identify authority sites within specific topic areas. These are sites that are frequently linked to by other relevant sites. Similarly, hub sites are those that link out to many important sites on a particular topic. Getting links from these authority sites and hubs can significantly boost your rankings for related queries.

5. Trust and independence of link sources significantly impact SEO

Trust is distinct from authority. Authority, on its own, doesn't sufficiently take into account whether the linking page or the domain is easy or difficult for spammers to infiltrate.

Building trust. Search engines evaluate a site's trustworthiness by analyzing its link neighborhood. Links from other trusted sites convey more trust. Concepts like TrustRank and spam mass help search engines identify trustworthy sites and filter out spam.

Independence is crucial. Links from independent sources carry more weight than self-created links. Search engines can detect patterns of cross-linking between related sites and may treat such links as internal rather than independent votes. Focus on earning links from truly independent, high-quality sources to maximize SEO benefit.

6. Diversity and context of links contribute to overall SEO effectiveness

Getting links from a range of sources is also a significant factor.

Diverse link profile. Aim for links from various types of sources:

  • Blogs
  • Directories
  • Social media sites
  • University sites
  • Media websites
  • Social bookmarking sites

Context matters. Search engines analyze the context of links, including:

  • Nearby links and text
  • Page placement (prominence)
  • Closest section header
  • Overall page and site context

A diverse and contextually relevant link profile appears more natural and valuable to search engines, reducing the risk of being overly dependent on a single link type or source.

7. Temporal factors and link patterns influence search engine evaluations

Search engines also keep detailed data on when they discover the existence of a new link, or the disappearance of a link.

Link timing analysis. Search engines consider various temporal factors:

  • When links first appear
  • When links disappear
  • How long links have existed
  • Rate of link acquisition

Pattern recognition. Sudden changes in link acquisition rates can be significant signals. Natural link growth patterns are preferred over abrupt spikes, which may indicate manipulation. However, context matters – a spike due to major news coverage is different from a spike due to buying links en masse.

8. Top-level domains (TLDs) do not inherently carry more link value

There is nothing in the algorithm itself, though, that says: oh, .edu—give that link more weight.

TLD myths debunked. Contrary to popular belief, search engines don't automatically give more weight to links from .edu, .gov, or .mil domains. The perceived value of these TLDs comes from the fact that they often belong to authoritative institutions, not from the TLD itself.

Authority varies within domains. Search engines evaluate authority at a more granular level than just the domain. Different sections of a site can have varying levels of authority on different topics. This allows search engines to value high-quality content while still identifying and discounting spammy sections within the same domain.

Last updated:

Review Summary

4.1 out of 5
Average of 500+ ratings from Goodreads and Amazon.

The Art of SEO receives generally positive reviews as a comprehensive guide to search engine optimization. Readers praise its depth of information and usefulness as a reference. Some note it's dense and occasionally repetitive, with outdated content due to the rapidly changing nature of SEO. The book is recommended for beginners and as a textbook, though experienced professionals may find parts less relevant. Critics suggest the organization could be improved, but overall it's considered a valuable resource for understanding SEO fundamentals and strategies.

Your rating:

About the Author

Eric Enge is a renowned expert in the field of search engine optimization and digital marketing. As the author of "The Art of SEO," he has established himself as a leading voice in the industry. Enge has extensive experience in SEO consulting and has worked with numerous high-profile clients. He is known for his data-driven approach and ability to explain complex concepts in accessible terms. Enge regularly contributes to industry publications and speaks at major conferences. His expertise extends beyond SEO to content marketing, social media strategy, and broader digital marketing topics. Enge's work has significantly influenced SEO practices and helped shape industry standards.

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