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
61 awarded
First bounty you manually award on your own question
257 awarded
Ask a good question on 5 separate days, and maintain a positive question record
622 awarded
First bounty you offer on another person's question
91 awarded
Question score of 10 or more
7.5k awarded
Question with 1,000 views
12.2k awarded
First bounty you offer on your own question
409 awarded
Ask a question and accept an answer
12.7k awarded
First question with score of 1 or more
18.5k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
689 awarded

Answer Badges

Edit and answer 1 question (both actions within 12 hours, answer score > 0)
313 awarded
Answer score of 10 or more
20.4k awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
541 awarded
Answer your own question with score of 3 or more
214 awarded
Answer a question with score of 1 or more
19.7k awarded

Participation Badges

Complete "About Me" section of user profile
58.4k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
2.9k awarded
Leave 10 comments
5.7k awarded
Earn at least 200 reputation (the daily maximum) in a single day
1.2k awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
69 awarded
One post with score of 2 on meta
843 awarded
Post 10 messages, with 1 or more starred, in chat
175 awarded

Tag Badges

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

Moderation Badges

First flagged post
3.8k awarded
First rollback
293 awarded
First down vote
5.3k awarded
Complete at least one review task. This badge is awarded once per review type
2k awarded
Delete own post with score of 3 or higher
125 awarded
First edit
16.7k awarded
Edit first post that was inactive for 6 months
944 awarded
First retag
988 awarded
Delete own post with score of -3 or lower
1.6k awarded
Approve or reject 100 suggested edits
39 awarded
Use 30 votes in a day
532 awarded
First up vote
45.9k awarded
First approved tag synonym
24 awarded
First tag wiki edit
281 awarded
Use the maximum 40 votes in a day
155 awarded

Other Badges

Visited every section of the FAQ (retired)
1.2k awarded
Share a link to a question later visited by 25 unique IP addresses
1.4k awarded
Read the entire tour page
5.7k awarded