• Look at the website comScore. This website provides some rankings like Ad Focus Ranking (Top Entities that Support Online Advertising), and Search engine Market Share.

• For research on Internet usage, go to Pew Internet and American Life Project.

• Also take a look at Google Trends "to see what the world is searching for."

For website traffic rankings:

• Alexa: Contains top traffic sites rankings and traffic graph to compare sites of your choice.
  • Check out the Global Top 500 - Updated Daily
  • You can also search for a website of your choice, e.g., 'illinois.edu' for Reach, Rank, and Page Views, and "Where do people go on illinois.edu,?" e.g., library.illinois.edu
• Quantcast
• ClickZ Stats