(Originally posted at http://joelnoche.multiply.com/journal/item/36/Math-teacher on January 20, 2011 8:13 PM)
Last night I became a registered user of MathOverflow. I answered a question, and a few minutes later, my answer was voted up. (Someone considered my answer helpful.) And because my answer to the first question I answered was given at least one up vote, I got a bronze “teacher” badge.