I know there is a similar question but this is different and I did NOT get an answer from that question.. Anyways here goes..
I use the addon auto-refresher on firefox and recently got a message from a website mod telling me that they know I am using it. They say they know each and every user that is using this mod. Are they really able to do that or are they just guessing? I actually feel a bit violated knowing that they are able to see which addons I am using and operating. I know the other question said that they cant but these people are claiming they have and know each user that is using it. I just want to know if they really can figure that out..and how.
Also, maybe it's just the auto-refresh addon they are able to detect? If so why?
Thank you so much for answers in advance!