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
63 awarded
First bounty you manually award on your own question
130 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
818 awarded
First bounty you offer on another person's question
75 awarded
Question score of 10 or more
4.6k awarded
Question with 1,000 views
20.8k awarded
First bounty you offer on your own question
173 awarded
Ask a question and accept an answer
14.3k awarded
First question with score of 1 or more
21.3k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
81 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
469 awarded
Answer score of 10 or more
12k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
421 awarded
Answer your own question with score of 3 or more
175 awarded
Answer a question with score of 1 or more
15.9k awarded

Participation Badges

Complete "About Me" section of user profile
33.3k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
1.8k awarded
Leave 10 comments
4k awarded
Earn at least 200 reputation (the daily maximum) in a single day
729 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
67 awarded
One post with score of 2 on meta
733 awarded
Post 10 messages, with 1 or more starred, in chat
252 awarded

Tag Badges

You must have a total score of 100 in at least 20 non-community wiki answers to achieve this badge.
1.1k awarded

Moderation Badges

First flagged post
2.4k awarded
First rollback
289 awarded
First down vote
3.4k awarded
Complete at least one review task. This badge is awarded once per review type
2.4k awarded
Delete own post with score of 3 or higher
97 awarded
First edit
12.5k awarded
Edit first post that was inactive for 6 months
484 awarded
First retag
652 awarded
Delete own post with score of -3 or lower
415 awarded
Approve or reject 100 suggested edits
61 awarded
Use 30 votes in a day
378 awarded
First up vote
28.3k awarded
First approved tag synonym
21 awarded
First tag wiki edit
124 awarded
Use the maximum 40 votes in a day
203 awarded

Other Badges

Visited every section of the FAQ (retired)
487 awarded
Share a link to a question later visited by 25 unique IP addresses
147 awarded
Read the entire tour page
6.8k awarded