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
244 awarded
Asked a well-received question on 5 separate days, and maintained a positive question record
475 awarded
First bounty you offered on another person's question
55 awarded
Question score of 10 or more
451 awarded
Asked a question with 1,000 views
7.6k awarded
First bounty you offered on your own question
429 awarded
Asked a question and accepted an answer
8.5k awarded
Asked first question with score of 1 or more
8.8k awarded
Asked a question with no votes, no answers, no comments, and low views for a week
4.3k awarded

Answer Badges

Edited and answered 1 question (both actions within 12 hours, answer score > 0)
167 awarded
Answer score of 10 or more
735 awarded
Answered more than 30 days later as first answer scoring 2 or more
826 awarded
Answered your own question with score of 3 or more
276 awarded
Answered first question with score of 1 or more
5.6k awarded

Participation Badges

Completed "About Me" section of user profile
13k awarded
Visited an election during any phase of an active election and had enough reputation to cast a vote
558 awarded
Left 10 comments
2.7k awarded
Earned at least 200 reputation (the daily maximum) in a single day
35 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
70 awarded
One post with score of 2 on meta
191 awarded
Posted 10 messages, with 1 or more starred, in chat
72 awarded

Tag Badges

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

Moderation Badges

First flagged post
787 awarded
First rollback
101 awarded
First down vote
748 awarded
Completed at least one review task. This badge is awarded once per review type
831 awarded
Deleted own post with score of 3 or higher
12 awarded
First edit
8.9k awarded
Edited first post that was inactive for 6 months
349 awarded
First retag
293 awarded
Deleted own post with score of -3 or lower
119 awarded
Approved or rejected 100 suggested edits
17 awarded
Used 30 votes in a day
99 awarded
First up vote
7.8k awarded
First approved tag synonym
11 awarded
First tag wiki edit
73 awarded
Used the maximum 40 votes in a day
62 awarded

Other Badges

Visited every section of the FAQ (retired)
410 awarded
Shared a link to a question that was visited by 25 unique IP addresses
349 awarded
Read the entire tour page
1.2k awarded