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
25 awarded
First bounty you manually award on your own question
141 awarded
Ask a good question on 5 separate days, and maintain a positive question record
532 awarded
First bounty you offer on another person's question
45 awarded
Question score of 10 or more
1.8k awarded
Question with 1,000 views
6.8k awarded
First bounty you offer on your own question
274 awarded
Ask a question and accept an answer
7.1k awarded
First question with score of 1 or more
9.6k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
1.2k awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
173 awarded
Answer score of 10 or more
2.9k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
591 awarded
Answer your own question with score of 3 or more
259 awarded
Answer a question with score of 1 or more
6.6k awarded

Participation Badges

Complete "About Me" section of user profile
20.3k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
540 awarded
Leave 10 comments
2k awarded
Earn at least 200 reputation (the daily maximum) in a single day
110 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
309 awarded
Post 10 messages, with 1 or more starred, in chat
214 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.3k awarded
First rollback
97 awarded
First down vote
1.5k awarded
Complete at least one review task. This badge is awarded once per review type
1.2k awarded
Delete own post with score of 3 or higher
28 awarded
First edit
7.6k awarded
Edit first post that was inactive for 6 months
291 awarded
First retag
434 awarded
Delete own post with score of -3 or lower
216 awarded
Approve or reject 100 suggested edits
17 awarded
Use 30 votes in a day
154 awarded
First up vote
13.5k awarded
First approved tag synonym
7 awarded
First tag wiki edit
132 awarded
Use the maximum 40 votes in a day
89 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
151 awarded
Read the entire tour page
2.2k awarded