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
27 awarded
First bounty you manually award on your own question
156 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
598 awarded
First bounty you offer on another person's question
50 awarded
Question score of 10 or more
2k awarded
Question with 1,000 views
7.9k awarded
First bounty you offer on your own question
301 awarded
Ask a question and accept an answer
7.9k 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
1.5k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
200 awarded
Answer score of 10 or more
3.2k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
690 awarded
Answer your own question with score of 3 or more
294 awarded
Answer a question with score of 1 or more
7.3k awarded

Participation Badges

Complete "About Me" section of user profile
23.9k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
539 awarded
Leave 10 comments
2.3k awarded
Earn at least 200 reputation (the daily maximum) in a single day
127 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
74 awarded
One post with score of 2 on meta
325 awarded
Post 10 messages, with 1 or more starred, in chat
232 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.5k awarded
First rollback
108 awarded
First down vote
1.6k awarded
Complete at least one review task. This badge is awarded once per review type
1.4k awarded
Delete own post with score of 3 or higher
32 awarded
First edit
8.6k awarded
Edit first post that was inactive for 6 months
346 awarded
First retag
485 awarded
Delete own post with score of -3 or lower
260 awarded
Approve or reject 100 suggested edits
20 awarded
Use 30 votes in a day
171 awarded
First up vote
15.1k awarded
First approved tag synonym
7 awarded
First tag wiki edit
153 awarded
Use the maximum 40 votes in a day
105 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
160 awarded
Read the entire tour page
3.1k awarded