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 awarded on another person's question
32 awarded
First bounty you manually awarded on your own question
150 awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
1k awarded
First bounty you offered on another person's question
54 awarded
Question score of 10 or more
1.3k awarded
Asked a question with 1,000 views
5.7k awarded
First bounty you offered on your own question
313 awarded
Asked a question and accepted an answer
5.4k awarded
Asked first question with score of 1 or more
12.6k awarded
Asked a question with no votes, no answers, no comments, and low views for a week
2k awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
202 awarded
Answer score of 10 or more
1.5k awarded
Answered more than 30 days later as first answer scoring 2 or more
849 awarded
Answered your own question with score of 3 or more
406 awarded
Answered first question with score of 1 or more
5.2k awarded

Participation Badges

Completed "About Me" section of user profile
6.8k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
969 awarded
Left 10 comments
1.8k awarded
Earned at least 200 reputation (the daily maximum) in a single day
34 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
254 awarded
Posted 10 messages, with 1 or more starred, in chat
30 awarded

Tag Badges

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

Moderation Badges

First flagged post
443 awarded
First rollback
63 awarded
First down vote
716 awarded
Completed at least one review task. This badge is awarded once per review type
1k awarded
Deleted own post with score of 3 or higher
38 awarded
First edit
6.2k awarded
Edited first post that was inactive for 6 months
293 awarded
First retag
419 awarded
Deleted own post with score of -3 or lower
44 awarded
Approved or rejected 100 suggested edits
31 awarded
Used 30 votes in a day
124 awarded
First up vote
6.4k awarded
First approved tag synonym
13 awarded
First tag wiki edit
153 awarded
Used the maximum 40 votes in a day
78 awarded

Other Badges

Visited every section of the FAQ (retired)
310 awarded
Shared a link to a question that was visited by 25 unique IP addresses
126 awarded
Read the entire tour page
1.4k awarded