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
37 awarded
First bounty you manually award on your own question
66 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
288 awarded
First bounty you offer on another person's question
47 awarded
Question score of 10 or more
3k awarded
Question with 1,000 views
4.4k awarded
First bounty you offer on your own question
104 awarded
Ask a question and accept an answer
3.1k awarded
First question with score of 1 or more
8.8k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
52 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
125 awarded
Answer score of 10 or more
4.7k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
577 awarded
Answer your own question with score of 3 or more
303 awarded
Answer a question with score of 1 or more
4.6k awarded

Participation Badges

Complete "About Me" section of user profile
10.8k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
936 awarded
Leave 10 comments
975 awarded
Earn at least 200 reputation (the daily maximum) in a single day
192 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
39 awarded
One post with score of 2 on meta
267 awarded
Post 10 messages, with 1 or more starred, in chat
79 awarded

Tag Badges

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

Moderation Badges

First flagged post
1k awarded
First rollback
78 awarded
First down vote
943 awarded
Complete at least one review task. This badge is awarded once per review type
806 awarded
Delete own post with score of 3 or higher
59 awarded
First edit
3.7k awarded
Edit first post that was inactive for 6 months
221 awarded
First retag
275 awarded
Delete own post with score of -3 or lower
72 awarded
Approve or reject 100 suggested edits
28 awarded
Use 30 votes in a day
131 awarded
First up vote
8.2k awarded
First approved tag synonym
12 awarded
First tag wiki edit
131 awarded
Use the maximum 40 votes in a day
77 awarded

Other Badges

Visited every section of the FAQ (retired)
135 awarded
Share a link to a question later visited by 25 unique IP addresses
291 awarded
Read the entire tour page
2.2k awarded