Wikipedia

The English edition of Wikipedia encyclopedia has more than 3 million articles and and anyone with Internet access can write and make changes to these Wikipedia articles.

Google Knol – Quick Start Guide

Everything you wanted to know about Google Knol – a wikipedia style online encyclopedia that anyone can edit and also make money using Google AdSense.

Determine The Shortest Path Between Two Wikipedia Articles

The shortest path between two Wikipedia articles is defined as the minimum number of clicks required to move from one article to another. This can be used to discover connections between topics that are completely unrelated.

Know the Daily Page Views for any Wikipedia Article

Wikipedia Traffic statistics is a gold mine for content creators and SEO crowd because traffic on individual Wikipedia articles is often directly proportional to the popularity of that term on the Internet.