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
42 awarded
First bounty you manually award on your own question
189 awarded
Ask a good question on 5 separate days, and maintain a positive question record
1.4k awarded
First bounty you offer on another person's question
69 awarded
Question score of 10 or more
1.5k awarded
Question with 1,000 views
8.6k awarded
First bounty you offer on your own question
395 awarded
Ask a question and accept an answer
7.4k awarded
First question with score of 1 or more
17.6k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
3k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
260 awarded
Answer score of 10 or more
1.8k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
1.2k awarded
Answer your own question with score of 3 or more
542 awarded
Answer a question with score of 1 or more
7k awarded

Participation Badges

Complete "About Me" section of user profile
9.6k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
967 awarded
Leave 10 comments
2.4k awarded
Earn at least 200 reputation (the daily maximum) in a single day
44 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
89 awarded
One post with score of 2 on meta
281 awarded
Post 10 messages, with 1 or more starred, in chat
34 awarded

Tag Badges

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

Moderation Badges

First flagged post
603 awarded
First rollback
82 awarded
First down vote
903 awarded
Complete at least one review task. This badge is awarded once per review type
1.3k awarded
Delete own post with score of 3 or higher
53 awarded
First edit
8.9k awarded
Edit first post that was inactive for 6 months
420 awarded
First retag
522 awarded
Delete own post with score of -3 or lower
70 awarded
Approve or reject 100 suggested edits
46 awarded
Use 30 votes in a day
148 awarded
First up vote
8.8k awarded
First approved tag synonym
17 awarded
First tag wiki edit
182 awarded
Use the maximum 40 votes in a day
94 awarded

Other Badges

Visited every section of the FAQ (retired)
309 awarded
Share a link to a question later visited by 25 unique IP addresses
148 awarded
Read the entire tour page
3.5k awarded