Today, first time I logged-in to math.stackexhange.com. I have other associated accounts also, so I got $101$ reputation initially. I vote-up one question then suddenly I undo the vote-up. After that it shows me supporter badge on my profile. If I am going to all accounts page, the page shows one bronze badge for mathematics account. Isn't it a bug or regular behaviour?

• When I made my first down-vote, I removed it within a few seconds, but still got my Critic badge. It seems that the badge triggers don't have an untrigger mechanism. – Peter Phipps Jun 8 '12 at 12:20
• – Willie Wong Jun 11 '12 at 7:28
• @Willie Your comment could be posted as/made to an answer. – Martin Sleziak Jan 6 '13 at 6:42

• By design, general badges are not revoked. For badges that can be awarded multiple times (such as Nice Answer and many others) the system will "get even" with you next time you qualify for the badge. For example, every time your answer reaches a score of 10, it compares the number of your 10+ answers and the number of your Nice Answer badges; if the second is less than the first, you get the badge again.