This is so sad, it had such enormous potential. (Might be an opportunity for a lone blog to take the helm.)

Makes me wonder if github are using private repos in their training data.

GitHub clearly stated they only used publicly available repos in this project. However, as many people are rightfully pointing out, those projects might still be either closed source or copylefted, and if Copilot regurgitates chunks of those projects, people who use it may be subject to infringement lawsuits in the future.