I’ve had the need recently to revise the way I handle contract and did a deep-dive into learning about contracts that work well for designers and ways of signing online. I highly recommend http://docracy.com
The problem with living on the bleeding-edge of WordPress nightly builds is all the bleeding. I just hosed my site for about 20 minutes. I just needed to get a released version in place, manually delete all the plugins and the admin Dashboard came back. Ooops!