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 awarded on another person's question
272 awarded
First bounty you manually awarded on your own question
1.6k awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
3.8k awarded
First bounty you offered on another person's question
562 awarded
Question score of 10 or more
7.9k awarded
Asked a question with 1,000 views
80.3k awarded
First bounty you offered on your own question
3.3k awarded
Asked a question and accepted an answer
43.1k awarded
Asked first question with score of 1 or more
65.7k awarded
Asked a question with no votes, no answers, no comments, and low views for a week
22.2k awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
956 awarded
Answer score of 10 or more
14.4k awarded
Answered more than 30 days later as first answer scoring 2 or more
7.5k awarded
Answered your own question with score of 3 or more
2.6k awarded
Answered first question with score of 1 or more
58.1k awarded

Participation Badges

Completed "About Me" section of user profile
78.1k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
6.2k awarded
Left 10 comments
13.2k awarded
Earned at least 200 reputation (the daily maximum) in a single day
798 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
One post with score of 2 on meta
1.1k awarded
Posted 10 messages, with 1 or more starred, in chat
311 awarded

Tag Badges

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

Moderation Badges

First flagged post
6.5k awarded
First rollback
741 awarded
First down vote
9k awarded
Completed at least one review task. This badge is awarded once per review type
5.8k awarded
Deleted own post with score of 3 or higher
200 awarded
First edit
45.9k awarded
Edited first post that was inactive for 6 months
3.5k awarded
First retag
2.7k awarded
Deleted own post with score of -3 or lower
643 awarded
Approved or rejected 100 suggested edits
145 awarded
Used 30 votes in a day
728 awarded
First up vote
78.4k awarded
First approved tag synonym
35 awarded
First tag wiki edit
674 awarded
Used the maximum 40 votes in a day
332 awarded

Other Badges

Visited every section of the FAQ (retired)
1.7k awarded
Shared a link to a question that was visited by 25 unique IP addresses
1k awarded
Read the entire tour page
8.4k awarded