I disagree with opting people into a license, because the choice of _which_ license is a very personal and important choice. Defaulting to a very permissive lic

I disagree with opting people into a license, because the choice of _which_ license is a very personal and important choice. Defaulting to a very permissive license would make folks think that more restrictive (but user-benefitting) licenses like the GPL are Bad ™ when they're not, whereas defaulting to a GPL flavour would make a load of things more restrictive than they may want to be. The only person who can make that decision is the author. However, I think one thing GitHub / other source forges can do is make it _clearer_ when no license is present and that it defaults to All-Rights-Reserved