Also it's important to remember that all user content posted on Stackoverflow is licensed under CC-by-SA, so if Stackoverflow started going south, someone else

Also it's important to remember that all user content posted on Stackoverflow is licensed under CC-by-SA, so if Stackoverflow started going south, someone else can fork the data and continue hosting it. The data dumps are hosted at the Internet Archive: https://archive.org/details/stackexchange https://archive.org/details/stackexchange