Unique subscriber IP addresses

Google Loves A Tasty Blogroll: "
Positive factors for a blog include its popularity, inclusion in blogrolls (especially high-quality ones), and tagging of the blog. News aggregator subscriptions could imply high popularity. Google said that it could validate those against 'subscriptions spam' by checking for unique subscriber IP addresses."

Del.icio.us + 50

The Free SEO Clinic - Modern SEO News Blog: "Share and Enjoy"

Free SEO Tools

New Releases of Computer Software, Games, Tools and Utilities at Simtel.net: "RankQuest Free SEO Tools Source 1.3
aims to help Webmasters in Search Engine Optimization. Keyword Finder and Meta Tag Analyzer are one of the most important tools for SEO."

How to deal with duplicate content problems

Google mentions several things that can lead to duplicate content:
"Forums that generate both regular and stripped-down mobile-targeted pages, store items shown (and -- worse yet -- linked) via multiple distinct URLs, and so on. In some cases, content is duplicated across domains in an attempt to manipulate search engine rankings or garner more traffic via popular or long-tail queries."

SEOmoz | Google's Patent

Information Retrieval Based on Historical Data: "Overview of the 5 Most Critical Concepts from this Paper:
Google's Concept of 'Document Inception'
How Changing Content can Affect Rankings
Spam Detection & Punishment
What Google is Attempting to Measure
The Impact of this Patent"

Patent Application

0050071741: "United States Patent Application 20050071741"

Web hosting and domain name tools

Web hosting and domain name tools: "A good web host is crucial to your success!"