In an effort to prevent scams and keep the Marketplace local, users must create an account using their @uchicago.edu, @uchospitals.edu, or @chicagobooth.edu email address before posting a listing. If you have a University ID (cNetID, UCHAD, etc.) but no University email address, email the moderators with your ID and full name, and a moderator will help you set up an account. To reiterate: If you do not have a University ID, then you are not eligible to post listings.