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Besides gaining reputation with your questions and answers, you receive badges for being especially helpful. Badges appear on your profile page, flair, and your posts.

Question Badges

First bounty you manually award on another person's question
18 awarded
First bounty you manually award on your own question
38 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
205 awarded
First bounty you offer on another person's question
28 awarded
Question score of 10 or more
346 awarded
Question with 1,000 views
3.1k awarded
First bounty you offer on your own question
76 awarded
Ask a question and accept an answer
1k awarded
First question with score of 1 or more
3.8k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
432 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
105 awarded
Answer score of 10 or more
362 awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
781 awarded
Answer your own question with score of 3 or more
38 awarded
Answer a question with score of 1 or more
1.8k awarded

Participation Badges

Complete "About Me" section of user profile
4.8k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
Leave 10 comments
505 awarded
Earn at least 200 reputation (the daily maximum) in a single day
19 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
47 awarded
One post with score of 2 on meta
145 awarded
Post 10 messages, with 1 or more starred, in chat
62 awarded

Tag Badges

You must have a total score of 100 in at least 20 non-community wiki answers to achieve this badge.
24 awarded

Moderation Badges

First flagged post
484 awarded
First rollback
75 awarded
First down vote
417 awarded
Complete at least one review task. This badge is awarded once per review type
704 awarded
Delete own post with score of 3 or higher
16 awarded
First edit
2.1k awarded
Edit first post that was inactive for 6 months
142 awarded
First retag
174 awarded
Delete own post with score of -3 or lower
83 awarded
Approve or reject 100 suggested edits
12 awarded
Use 30 votes in a day
62 awarded
First up vote
2.3k awarded
First approved tag synonym
7 awarded
First tag wiki edit
49 awarded
Use the maximum 40 votes in a day
36 awarded

Other Badges

Share a link to a question later visited by 25 unique IP addresses
53 awarded
Read the entire tour page
2k awarded

Retired Badges

Visited every section of the FAQ
32 awarded