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
49 awarded
First bounty you manually awarded on your own question
313 awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
1.1k awarded
First bounty you offered on another person's question
94 awarded
Question score of 10 or more
1.8k awarded
Asked a question with 1,000 views
5.4k awarded
First bounty you offered on your own question
674 awarded
Asked a question and accepted an answer
7.3k awarded
Asked first question with score of 1 or more
16.5k awarded
Asked a question with no votes, no answers, no comments, and low views for a week
4k awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
242 awarded
Answer score of 10 or more
2.8k awarded
Answered more than 30 days later as first answer scoring 2 or more
1.2k awarded
Answered your own question with score of 3 or more
183 awarded
Answered first question with score of 1 or more
5.2k awarded

Participation Badges

Completed "About Me" section of user profile
10.7k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
446 awarded
Left 10 comments
2.3k awarded
Earned at least 200 reputation (the daily maximum) in a single day
76 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
79 awarded
One post with score of 2 on meta
328 awarded
Posted 10 messages, with 1 or more starred, in chat
45 awarded

Tag Badges

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

Moderation Badges

First flagged post
722 awarded
First rollback
88 awarded
First down vote
940 awarded
Completed at least one review task. This badge is awarded once per review type
1.1k awarded
Deleted own post with score of 3 or higher
90 awarded
First edit
9.6k awarded
Edited first post that was inactive for 6 months
307 awarded
First retag
442 awarded
Deleted own post with score of -3 or lower
43 awarded
Approved or rejected 100 suggested edits
22 awarded
Used 30 votes in a day
110 awarded
First up vote
9.8k awarded
First approved tag synonym
13 awarded
First tag wiki edit
115 awarded
Used the maximum 40 votes in a day
56 awarded

Other Badges

Visited every section of the FAQ (retired)
266 awarded
Shared a link to a question that was visited by 25 unique IP addresses
234 awarded
Read the entire tour page
2k awarded