Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
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.
Earn at least 100 total score for at least 20 non-community wiki answers in the discussion tag
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awarded
These badges are awarded for participating in non community-wiki questions with particular tags. If enough votes are earned in a tag with 100+ total questions, the badge will be automatically created and awarded.