When I go to https://check.torproject.org via TBB, I get a positive (green) result:
But when I go there using another browser (non TBB) I get a positive (orange) result that says I am using Tor, but not TBB:
How does check.torproject.org know I am using TBB? What implications does that have on my anonymity on the internet? What else can anyone (read: ISPs, governments, corporate IT personnel, etc.) know about me when I'm using Tor?