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In your profile you can see the badges that people have given you, and the badges that you have given others.
But can everyone see the post or comment as a badged post or comment? Salman Khan, of Khan Academy, on the badge system of the site: Just the wording of the badging or how many points you get for doing something, we see on a system-wide basis, tens of thousands of fifth-graders of sixth-graders going one direction or another depending on what badge you give them. http://youtu.be/nTFEUsudhfs?t=17m