Alexa Internet

Alexa Internet, Inc. is a California-based subsidiary company of Amazon.com that is known for its toolbar and website. Once installed, the toolbar collects data on browsing behavior which is transmitted to the website where it is stored and analyzed and is the basis for the company's web traffic reporting.

Commission Junction

Commission Junction is an online advertising company owned by ValueClick. It is specifically in the affiliate marketing industry.

Commission Junction is the largest affiliate network in North America, powering 53% of the top 500 web retailers affiliate marketing programs and operates worldwide. Along with being the world's largest Affiliate Network, Commission Junction also promotes their Search Marketing services and their media services. Their corporate headquarters is located in Santa Barbara, California with other offices in Chicago, New York, San Francisco, Westborough and Westlake. Commission Junction has also offices in the UK, Germany, France, Sweden and Spain.

Digg

Digg is a social news website made for people to discover and share content from anywhere on the Internet, by submitting links and stories, and voting and commenting on submitted links and stories. Voting stories up and down is the site's cornerstone function, respectively called digging and burying. Many stories get submitted every day, but only the most Dugg stories appear on the front page. Digg's popularity has prompted the creation of other social networking sites with story submission and voting systems.

Smashing Magazine

Smashing Magazine is a website and blog that offers resources and advice to web developers and web designers. It was founded by Sven Lennartz and Vitaly Friedman. In December 2008 BurrellesLuce ranked Smashing Magazine number ten in their list of top blogs. As of February 2009, Smashing Magazine had an Alexa ranking of 10,338 Smashing Magazine evaluates software, applications, and web-based tools that are targeted at web designers and developers, and publishes tutorials and how-tos on design and development. Smashing Magazine also offers free fonts, icons, and templates for download, as well as showcasing other things of importance the the web development community, such as HTTP 404 error page designs.

Wikipedia

Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its name is a portmanteau of the words wiki (a technology for creating collaborative websites, from the Hawaiian word wiki, meaning 'quick') and encyclopedia. Wikipedia's 13 million articles (2.9 million in the English Wikipedia) have been written collaboratively by volunteers around the world, and almost all of its articles can be edited by anyone who can access the Wikipedia website.