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
79 awarded
First bounty you manually awarded on your own question
305 awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
1.2k awarded
First bounty you offered on another person's question
138 awarded
Question score of 10 or more
2.8k awarded
Asked a question with 1,000 views
6.4k awarded
First bounty you offered on your own question
537 awarded
Asked a question and accepted an answer
8.6k awarded
Asked first question with score of 1 or more
14.6k awarded
Asked a question with no votes, no answers, no comments, and low views for a week
1.2k awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
348 awarded
Answer score of 10 or more
4k awarded
Answered more than 30 days later as first answer scoring 2 or more
1k awarded
Answered your own question with score of 3 or more
146 awarded
Answered first question with score of 1 or more
6.6k awarded

Participation Badges

Completed "About Me" section of user profile
14.8k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
444 awarded
Left 10 comments
3.1k awarded
Earned at least 200 reputation (the daily maximum) in a single day
216 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
55 awarded
One post with score of 2 on meta
517 awarded
Posted 10 messages, with 1 or more starred, in chat
174 awarded

Tag Badges

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

Moderation Badges

First flagged post
1.4k awarded
First rollback
169 awarded
First down vote
1.9k awarded
Completed at least one review task. This badge is awarded once per review type
2.3k awarded
Deleted own post with score of 3 or higher
93 awarded
First edit
9.8k awarded
Edited first post that was inactive for 6 months
462 awarded
First retag
608 awarded
Deleted own post with score of -3 or lower
305 awarded
Approved or rejected 100 suggested edits
42 awarded
Used 30 votes in a day
214 awarded
First up vote
13.5k awarded
First approved tag synonym
11 awarded
First tag wiki edit
111 awarded
Used the maximum 40 votes in a day
122 awarded

Other Badges

Visited every section of the FAQ (retired)
271 awarded
Shared a link to a question that was visited by 25 unique IP addresses
174 awarded
Read the entire tour page
3k awarded