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
22 awarded
First bounty you manually awarded on your own question
117 awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
344 awarded
First bounty you offered on another person's question
43 awarded
Question score of 10 or more
2.2k awarded
Asked a question with 1,000 views
5.5k awarded
First bounty you offered on your own question
172 awarded
Asked a question and accepted an answer
5.8k awarded
Asked first question with score of 1 or more
9.3k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
369 awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
161 awarded
Answer score of 10 or more
4k awarded
Answered more than 30 days later as first answer scoring 2 or more
266 awarded
Answered your own question with score of 3 or more
109 awarded
Answered first question with score of 1 or more
5.6k awarded

Participation Badges

Completed "About Me" section of user profile
21.9k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
338 awarded
Left 10 comments
1.5k awarded
Earned at least 200 reputation (the daily maximum) in a single day
212 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
80 awarded
One post with score of 2 on meta
222 awarded
Posted 10 messages, with 1 or more starred, in chat
146 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.4k awarded
First rollback
67 awarded
First down vote
1.3k 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
26 awarded
First edit
6k awarded
Edited first post that was inactive for 6 months
332 awarded
First retag
328 awarded
Deleted own post with score of -3 or lower
183 awarded
Approved or rejected 100 suggested edits
25 awarded
Used 30 votes in a day
149 awarded
First up vote
18.5k awarded
First approved tag synonym
6 awarded
First tag wiki edit
95 awarded
Used the maximum 40 votes in a day
94 awarded

Other Badges

Visited every section of the FAQ (retired)
445 awarded
Shared a link to a question that was visited by 25 unique IP addresses
439 awarded
Read the entire tour page
2.2k awarded