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
18 awarded
First bounty you manually award on your own question
38 awarded
Ask a good question on 5 separate days, and maintain a positive question record
151 awarded
First bounty you offer on another person's question
25 awarded
Question score of 10 or more
514 awarded
Question with 1,000 views
4k awarded
First bounty you offer on your own question
75 awarded
Ask a question and accept an answer
4.1k awarded
First question with score of 1 or more
6.1k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
286 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
88 awarded
Answer score of 10 or more
936 awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
288 awarded
Answer your own question with score of 3 or more
128 awarded
Answer a question with score of 1 or more
3.8k awarded

Participation Badges

Complete "About Me" section of user profile
13.1k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
432 awarded
Leave 10 comments
609 awarded
Earn at least 200 reputation (the daily maximum) in a single day
48 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
46 awarded
One post with score of 2 on meta
177 awarded
Post 10 messages, with 1 or more starred, in chat
70 awarded

Tag Badges

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

Moderation Badges

First flagged post
477 awarded
First rollback
37 awarded
First down vote
423 awarded
Complete at least one review task. This badge is awarded once per review type
492 awarded
Delete own post with score of 3 or higher
11 awarded
First edit
3.5k awarded
Edit first post that was inactive for 6 months
161 awarded
First retag
170 awarded
Delete own post with score of -3 or lower
62 awarded
Approve or reject 100 suggested edits
12 awarded
Use 30 votes in a day
69 awarded
First up vote
8.5k awarded
First approved tag synonym
12 awarded
First tag wiki edit
63 awarded
Use the maximum 40 votes in a day
44 awarded

Other Badges

Visited every section of the FAQ (retired)
134 awarded
Share a link to a question later visited by 25 unique IP addresses
60 awarded
Read the entire tour page
2.1k awarded