Don’t know what search engine optimization is? Know someone who needs easy to understand overview of SEO? That’s what this video provides, in three minutes. It’s part of the many resources provided by Search Engine Land’s “What Is SEO” page http://searchengineland.com/guide/what-is-seo & the video was created with Common Craft, which has many other great, short explainer videos like this at http://www.commoncraft.com/
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