Features: - Tracks browsing time across sessions - Pauses automatically when you stop browsing - Reset counter - Pause toggle per window - List 'work' sites that should not count - Tooltip showing total time today, since last reset and since installing. Named Download of the Day on Lifehacker: http://www.lifehacker.com/software/time-tracker/download-of-the-day-timetracker-firefox-extension-173124.