Members of the site each have a user profile and can upload research output including papers, data, chapters, negative results, patents, research proposals, methods, presentations, and software source code. Users may also follow the activities of other users and engage in discussions with them.
Here is the official word from Microsoft TechNet, The C:\Users folder is shared when any sub folders from C:\Users\<username>\ is shared. The article is stale and mostly unhelpful, but worth knowing to complete the story.
If you click the save button, your code will be saved, and you get an URL you can share with others. By clicking the Save button you agree to our terms and conditions. Report Error. All code in shared files are supplied by users, and belongs to the poster. All shared files are made public. No license is enforced.