I really doubt this exists, but I thought I would ask anyways. I am trying to limit my time at some websites (that I seem to waste hours on) and am looking for some sort of timer plugin for firefox, that will display how long I have been on a certain site that day. Or possibly just a timer that shows how long the current tab has been open. Any chance something like this exists? I searched a bit but couldnt find anything, but I did not look too hard