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
21 awarded
First bounty you manually award on your own question
112 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
896 awarded
First bounty you offer on another person's question
28 awarded
Question score of 10 or more
1.4k awarded
Question with 1,000 views
21.1k awarded
First bounty you offer on your own question
226 awarded
Ask a question and accept an answer
9.7k awarded
First question with score of 1 or more
22.4k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
172 awarded
Answer score of 10 or more
3.5k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
1.1k awarded
Answer your own question with score of 3 or more
325 awarded
Answer a question with score of 1 or more
9.4k awarded

Participation Badges

Complete "About Me" section of user profile
19.8k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
686 awarded
Leave 10 comments
2.5k awarded
Earn at least 200 reputation (the daily maximum) in a single day
135 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
230 awarded
Post 10 messages, with 1 or more starred, in chat
44 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.2k awarded
First rollback
112 awarded
First down vote
1.1k awarded
Complete at least one review task. This badge is awarded once per review type
1k awarded
Delete own post with score of 3 or higher
26 awarded
First edit
10.8k awarded
Edit first post that was inactive for 6 months
358 awarded
First retag
305 awarded
Delete own post with score of -3 or lower
47 awarded
Approve or reject 100 suggested edits
19 awarded
Use 30 votes in a day
117 awarded
First up vote
15.2k awarded
First approved tag synonym
9 awarded
First tag wiki edit
57 awarded
Use the maximum 40 votes in a day
69 awarded

Other Badges

Share a link to a post later visited by 25 unique IP addresses
524 awarded
Read the entire tour page
8.6k awarded

Retired Badges

Visited every section of the FAQ
137 awarded
Asked a question with zero score, no answers, no comments, and low views for a week
1k awarded