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
67 awarded
First bounty you manually award on your own question
325 awarded
Ask a well-received question on 5 separate days, and maintain a positive question record
1.9k awarded
Ask a well-received question on 30 separate days, and maintain a positive question record
129 awarded
Ask a well-received question on 100 separate days, and maintain a positive question record
12 awarded
Question favorited by 25 users
229 awarded
Question favorited by 100 users
19 awarded
First bounty you offer on another person's question
132 awarded
Question score of 10 or more
4.9k awarded
Question score of 25 or more
1.2k awarded
Question score of 100 or more
98 awarded
Question with 1,000 views
25.4k awarded
Question with 2,500 views
14k awarded
Question with 10,000 views
4.2k awarded
First bounty you offer on your own question
797 awarded
Ask a question and accept an answer
18.1k awarded
First question with score of 1 or more
29.2k awarded
Asked a question with zero score, no answers, no comments, and low views for a week
4.4k awarded

Answer Badges

First to answer and accepted with score of 10 or more
3k awarded
Edit and answer 1 question (both actions within 12 hours, answer score > 0)
553 awarded
Edit and answer 50 questions (both actions within 12 hours, answer score > 0)
17 awarded
Edit and answer 500 questions (both actions within 12 hours, answer score > 0)
2 awarded
Provide non-wiki answers of 15 total score in 20 of top 40 tags
49 awarded
Accepted answer and score of 40 or more
601 awarded
Answer score of 10 or more
8.6k awarded
Answer score of 25 or more
2.1k awarded
Answer score of 100 or more
143 awarded
Highest scoring answer that outscored an accepted answer with score of more than 10 by more than 2x
91 awarded
Provide an answer of +20 score to a question of -5 score
2 awarded
Answer more than 30 days after a question was asked as first answer scoring 2 or more
1.7k awarded
Answer a question more than 60 days later with score of 5 or more
1.4k awarded
Answer your own question with score of 3 or more
1k awarded
Answer a question with score of 1 or more
16.8k awarded
Zero score accepted answers: more than 5 and 20% of total
15 awarded
Zero score accepted answers: more than 10 and 25% of total
1 awarded

Participation Badges

Complete "About Me" section of user profile
49.6k awarded
Visit an election during any phase of an active election and have enough reputation to cast a vote
1.1k awarded
Vote for a candidate in the final phase of an election
631 awarded
Leave 10 comments
5k awarded
Leave 10 comments with score of 5 or more
70 awarded
Visit the site each day for 30 consecutive days. (Days are counted in UTC.)
880 awarded
Visit the site each day for 100 consecutive days. (Days are counted in UTC.)
271 awarded
Earn at least 200 reputation (the daily maximum) in a single day
326 awarded
Earn 200 daily reputation 50 times
6 awarded
Earn 200 daily reputation 150 times
3 awarded
Followed the Area 51 proposal for this site before it entered the commitment phase
68 awarded
Voted 10 times, added 3 posts score > 0, and visited the site on 3 separate days during the private beta
69 awarded
One post with score of 2 on meta
447 awarded
10 posts with score of 2 on meta
30 awarded
Post 10 messages, with 1 or more starred, in chat
79 awarded
Post 10 messages in chat starred by 10 different users
13 awarded
Active member for a year, earning at least 200 reputation
8.8k awarded

Tag Badges

You must have a total score of 100 in at least 20 non-community wiki answers to achieve this badge.
740 awarded
You must have a total score of 400 in at least 80 non-community wiki answers to achieve this badge.
108 awarded
You must have a total score of 1000 in at least 200 non-community wiki answers to achieve this badge.
23 awarded

Moderation Badges

First flagged post
2.1k awarded
Raise 80 helpful flags
60 awarded
Raise 500 helpful flags
6 awarded
Vote 300 or more times
324 awarded
First rollback
336 awarded
Served as a pro-tem moderator for at least 1 year or through site graduation
4 awarded
Served as an elected moderator for at least 1 year
5 awarded
First down vote
2.9k awarded
Complete at least one review task. This badge is awarded once per review type
3.6k awarded
Complete at least 250 review tasks. This badge is awarded once per review type
175 awarded
Complete at least 1,000 review tasks. This badge is awarded once per review type
46 awarded
Delete own post with score of 3 or higher
93 awarded
First edit
20.6k awarded
Edit 80 posts
113 awarded
Edit 500 posts (excluding own or deleted posts and tag edits)
23 awarded
Vote on 600 questions and 25% or more of total votes are on questions
77 awarded
Edit first post that was inactive for 6 months
1.4k awarded
Edit 100 posts that were inactive for 6 months
8 awarded
First retag
959 awarded
Delete own post with score of -3 or lower
225 awarded
Approve or reject 100 suggested edits
84 awarded
Up vote 100 answers on questions where an answer of yours has a positive score
27 awarded
Use 30 votes in a day
312 awarded
First up vote
44.3k awarded
First approved tag synonym
11 awarded
First tag wiki edit
300 awarded
Edit 50 tag wikis
3 awarded
Create a tag used by 50 questions
176 awarded
Use the maximum 40 votes in a day
209 awarded

Other Badges

Visited every section of the FAQ (retired)
560 awarded
Share a link to a question later visited by 25 unique IP addresses
396 awarded
Share a link to a question later visited by 300 unique IP addresses
28 awarded
Share a link to a question later visited by 1000 unique IP addresses
12 awarded
Read the entire tour page
8k awarded
http://unix.stackexchange.com/help/badges?tab=general&filter=all
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