Ever wonder how long you spend on facebook? With this Chrome extension, you can track the time you spend on each site and compare the data in insightful ways.
Download the source, open up chrome://extensions in Google Chrome, and enable 'developer mode'.
Then, press 'Load unpacked extension' and navigate to the directory this extension is in.
After a reload, it should start tracking and you will see the icon at the top near the address bar.
Martin Wozniewicz: Monitoring tab/page changes and storing the total time spent on each. Chrome extension code and storage architecture.
Greg Blaszczuk: Displaying site icons scaled based on time spent on each. Querying google images to get high-quality icons for each site.