Those sites are scraping content from Super User, as they are allowed to, so long as they follow the rules of attribution:
- Visually indicate that the content is from Stack Overflow or the Stack Exchange network in some way. It doesn’t have to be obnoxious; a discreet text blurb is fine.
- Hyperlink directly to the original question on the source site (e.g., http://stackoverflow.com/questions/12345https://stackoverflow.com/questions/12345)
- Show the author names for every question and answer
- Hyperlink each author name directly back to their user profile page on the source site (e.g., http://stackoverflow.com/users/12345/usernamehttps://stackoverflow.com/users/12345/username)
If you find a site that is copying, but fails to follow the above four minor steps, please report that site to Stack Exchange and they will take it from there.