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
90 awarded
First bounty you manually award on your own question
443 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
1.2k awarded
First bounty you offer on another person's question
207 awarded
Question score of 10 or more
2.3k awarded
Question with 1,000 views
24k awarded
First bounty you offer on your own question
974 awarded
Ask a question and accept an answer
11.2k awarded
First question with score of 1 or more
23.1k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
6k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
348 awarded
Answer score of 10 or more
3.3k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
2.4k awarded
Answer your own question with score of 3 or more
775 awarded
Answer a question with score of 1 or more
16.4k awarded

Participation Badges

Complete "About Me" section of user profile
35k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
695 awarded
Leave 10 comments
2.7k awarded
Earn at least 200 reputation (the daily maximum) in a single day
101 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
324 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.
250 awarded

Moderation Badges

First flagged post
1.9k awarded
First rollback
199 awarded
First down vote
2.1k awarded
Complete at least one review task. This badge is awarded once per review type
1.7k awarded
Delete own post with score of 3 or higher
28 awarded
First edit
12.2k awarded
Edit first post that was inactive for 6 months
925 awarded
First retag
635 awarded
Delete own post with score of -3 or lower
112 awarded
Approve or reject 100 suggested edits
44 awarded
Use 30 votes in a day
214 awarded
First up vote
29.7k awarded
First approved tag synonym
11 awarded
First tag wiki edit
164 awarded
Use the maximum 40 votes in a day
113 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
759 awarded
Read the entire tour page
5.5k awarded