Search engine optimization involves optimizing web pages to be found relevantly in search engine results. Key factors search engines consider include keywords, page titles, headers and body text. Tools like keyword research and link analysis help with optimization. Techniques involve on-page elements like keywords and off-page elements like getting links from other relevant sites. Directories and search engines should be submitted to for improved discoverability. Link popularity, or the number and quality of inbound links, is an important ranking signal for search engines.
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