The data that was provide from Rescue Time was good information to analyze users' Internet usage.

RescueTime does an excellent job of keeping track of all your activities computer/web/phone activity thus giving you insight into how productive you've been. Probably my favorite feature is the weekly email showing me how many hours I worked, and how many of those hours were productive. There are reasons why these numbers aren't completely reliable, but they provide a lot of insight.

Clear weekly reports and easy to use, runs in background