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
31 awarded
First bounty you manually award on your own question
154 awarded
Ask a good question on 5 separate days, and maintain a positive question record
397 awarded
First bounty you offer on another person's question
76 awarded
Question score of 10 or more
1k awarded
Question with 1,000 views
10.9k awarded
First bounty you offer on your own question
405 awarded
Ask a question and accept an answer
5k awarded
First question with score of 1 or more
11k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
3.5k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
116 awarded
Answer score of 10 or more
1k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
954 awarded
Answer your own question with score of 3 or more
358 awarded
Answer a question with score of 1 or more
6.8k awarded

Participation Badges

Complete "About Me" section of user profile
21.5k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
395 awarded
Leave 10 comments
1.1k awarded
Earn at least 200 reputation (the daily maximum) in a single day
32 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
221 awarded
Post 10 messages, with 1 or more starred, in chat
39 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.1k awarded
First rollback
67 awarded
First down vote
864 awarded
Complete at least one review task. This badge is awarded once per review type
826 awarded
Delete own post with score of 3 or higher
19 awarded
First edit
6.4k awarded
Edit first post that was inactive for 6 months
297 awarded
First retag
378 awarded
Delete own post with score of -3 or lower
62 awarded
Approve or reject 100 suggested edits
24 awarded
Use 30 votes in a day
118 awarded
First up vote
11.9k awarded
First approved tag synonym
10 awarded
First tag wiki edit
115 awarded
Use the maximum 40 votes in a day
84 awarded

Other Badges

Visited every section of the FAQ (retired)
349 awarded
Share a link to a question later visited by 25 unique IP addresses
371 awarded
Read the entire tour page
3.3k awarded