Or, an open access journal (with discussions and feedback) that I enjoy reading and will probably submit to in the future is https://peerj.com/ https://peerj.co

Or, an open access journal (with discussions and feedback) that I enjoy reading and will probably submit to in the future is https://peerj.com/ https://peerj.com/ In physics there's obviously the ArXiv, and various sites to rate and comment like, https://scirate.com/ https://scirate.com/