How I turned my open-source project into a businessWhen I started writing and publishing open-source software about 15 years ago, I was pretty radical about it. I only used permissive licenses like MIT or BSD, as all I cared about was reach. Using a copyleft license with strings attached seemed to hinder that reach. Getting another A-category company to use my open-source libraries like Nodemailer was a badge of honor. I even went so far that when
http://did2memo.net/2014/05/15/xiami-com/
Google Maps API有料化の詳細発表、該当ユーザーは2012年初めに強制課金開始 
