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
94 awarded
First bounty you manually award on your own question
471 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
1.3k awarded
First bounty you offer on another person's question
219 awarded
Question score of 10 or more
2.5k awarded
Question with 1,000 views
25.5k awarded
First bounty you offer on your own question
1k awarded
Ask a question and accept an answer
11.8k awarded
First question with score of 1 or more
24.3k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
6.6k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
354 awarded
Answer score of 10 or more
3.6k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
2.5k awarded
Answer your own question with score of 3 or more
834 awarded
Answer a question with score of 1 or more
17.3k awarded

Participation Badges

Complete "About Me" section of user profile
38k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
694 awarded
Leave 10 comments
2.9k awarded
Earn at least 200 reputation (the daily maximum) in a single day
100 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
87 awarded
One post with score of 2 on meta
332 awarded
Post 10 messages, with 1 or more starred, in chat
109 awarded

Tag Badges

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

Moderation Badges

First flagged post
2k awarded
First rollback
208 awarded
First down vote
2.2k awarded
Complete at least one review task. This badge is awarded once per review type
1.8k awarded
Delete own post with score of 3 or higher
31 awarded
First edit
13.1k awarded
Edit first post that was inactive for 6 months
1k awarded
First retag
664 awarded
Delete own post with score of -3 or lower
121 awarded
Approve or reject 100 suggested edits
48 awarded
Use 30 votes in a day
223 awarded
First up vote
32.2k awarded
First approved tag synonym
11 awarded
First tag wiki edit
169 awarded
Use the maximum 40 votes in a day
122 awarded

Other Badges

Visited every section of the FAQ (retired)
423 awarded
Share a link to a question later visited by 25 unique IP addresses
804 awarded
Read the entire tour page
6.5k awarded