Docracy is a really cool service (https://www.docracy.com). It allows you to fork documents and you can find plenty of terms of service examples on their site. You can also fork the docracy terms and change them to your needs since their TOS is open source.
You can also host your TOS/Privacy policy on docracy and link to it from your website so users can see changes that you have made.
You can also host your TOS/Privacy policy on docracy and link to it from your website so users can see changes that you have made.