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
26 awarded
First bounty you manually award on your own question
98 awarded
Ask a good question on 5 separate days, and maintain a positive question record
399 awarded
First bounty you offer on another person's question
32 awarded
Question score of 10 or more
2k awarded
Question with 1,000 views
2.8k awarded
First bounty you offer on your own question
126 awarded
Ask a question and accept an answer
4.7k awarded
First question with score of 1 or more
7.2k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
115 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
168 awarded
Answer score of 10 or more
3.4k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
141 awarded
Answer your own question with score of 3 or more
63 awarded
Answer a question with score of 1 or more
6.4k awarded

Participation Badges

Complete "About Me" section of user profile
22.7k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
862 awarded
Leave 10 comments
1.5k awarded
Earn at least 200 reputation (the daily maximum) in a single day
255 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
84 awarded
One post with score of 2 on meta
308 awarded
Post 10 messages, with 1 or more starred, in chat
75 awarded

Tag Badges

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

Moderation Badges

First flagged post
1k awarded
First rollback
74 awarded
First down vote
1.3k awarded
Complete at least one review task. This badge is awarded once per review type
983 awarded
Delete own post with score of 3 or higher
21 awarded
First edit
5k awarded
Edit first post that was inactive for 6 months
264 awarded
First retag
311 awarded
Delete own post with score of -3 or lower
72 awarded
Approve or reject 100 suggested edits
21 awarded
Use 30 votes in a day
155 awarded
First up vote
17k awarded
First approved tag synonym
12 awarded
First tag wiki edit
91 awarded
Use the maximum 40 votes in a day
89 awarded

Other Badges

Visited every section of the FAQ (retired)
469 awarded
Share a link to a question later visited by 25 unique IP addresses
331 awarded
Read the entire tour page
2.4k awarded