Not technically open source, because I don't know which license is best for regular text, but I just put a Creative Commons Sharealike license on the WordPress.com terms of service and Automattic privacy policy. People were stealing them anyway, might as well make it legit. 🙂 Feel free to grab bits and pieces and search/replace your company/project in. If you want to throw us a link as a thank you, I'd be flattered.