From the article: "Google is working to collect information about Internet users that it can't get from just monitoring its own browser, services, and Android devices. The company has set up a new program called Screenwise, which offers money to users who install a black box on their home network to "measure Internet use." A smaller amount of money will go to those who install a browser extension on their computers that will do the same thing." Read more
See Also
Google. "Help Us Make Google Better."