3 ms·ShareAlike is also effective. What we know for sure is that Copyleft is never going to work.by lucasgonze 3y agoShareAlike is also effective. What we know for sure is that Copyleft is never going to work.clearleaf 3y agoNever heard "ShareAlike" either, and it sounds like a proprietary file sharing feature for phones or something. I just say open source and everyone has always known what I meant.Tomte 3y agoIt's a term from the Creative Commons family of licenses.