Security, maybe some of us are accessing the community in public places (not using public wifi), so you don't want any prying eyes see who your are if you see that you are in the bitcointalk forum.
Thank you, now I see the point for this request.Personally I do care about that too and my personal approach is finding a place where behind my back is the wall, nobody behind me. At least with this choice, I reduce risk but it is not perfect and the script request makes sense.
Personally, I am not fan of user script as I don't know what they code
. I can not verify script by myself and I choose a safe approach, don't use it to avoid putting my computer at infection risk.