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I understand that user contributed content is licensed under cc-wiki but Creative Commons work still requires a copyright holder. So who actually owns Stack Overflow's user contributed content? Stack Overflow or the individual users who contributed the content?
If it's the individual users, then
- isn't Stack Overflow breaking the terms of cc-wiki since they are using the content for a commercial purpose? (they generate advertising revenue from user generated content)
- could a user demand that all his/her contributions be removed from the website? What would happen in the case of content which had been heavily edited by many different users?
If it is Stack Overflow who owns the content then does that mean people using Stack Overflow user contributed content on other websites should, under the terms of cc-wiki, attribute Stack Overflow and not the individual users who wrote the content?
Does Stack Overflow have a Terms and Conditions stating their IP rights with regard to the content they contribute?