Absolutely wonderful. My favorite part about this, is that it is made specifically and only for Firefox!
But is there anyway to make it so that it continues to time as long as the tab is opened (it doesnt have to be focused), for a certain domain. Because I download files from the site and analyze it in an offline app, and then come back to Firefox to complete the work. But this is only for specific domains.
Right now I see only an option to make it continually time for all domains or none domains.