Content, Popularity, and Architecture: Things All Search Engines Look For

To keep their results relevant, all search engines need to understand the main subject of a Web site. You can help the search engines find your Web site by keeping in mind the three major factors they’re looking for — content, popularity, and architecture...

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http://www.dummies.com/how-to/content/content-popularity-and-architecture-things-all-sea.html?cid=dn_article

11 Business Networking Sites Suited for Online Reputation Management and SEO

by David Pye

Is it a business directory? Is it a business networking site? Is it an overzealous hybrid destined to over-extend itself and die on the vine? For our purposes today we’ll refer to them as “biz sites” and it can’t hurt to familiarize yourself with the wide range that are available.

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http://thirstypony.com/2008/06/11-business-networking-sites-suited-for-online-reputation-management-and-seo

How Social Networking Has Killed Digg and SEO 1.0

Three years ago I boldly predicted that social browsing services like StumbleUpon will kill Digg and SEO 1.0. Did they? No. I was wrong. Social networking did though. Let me explain.

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http://seo2.0.onreact.com/7-social-browsing-services-that-will-kill-digg-and-seo-10