The Copyright Clearance Center sent out a blurb announcing that they've upgraded their Rightslink tool, a set of software and services that is designed to help creators figure out what they want to license, to whom, and on what basis. There are a variety of tools that creators need if they're going to get their content out inside of a for-pay infrastructure. I'm not in the business of promoting one tool over another but I'm happy to list resources and encourage users to share their experiences.