Abiding by copyright and other IP laws is a requirement when creating and distributing content online content. The Center for Social Media, part of the School of Communication at American University, has produced a free resource to help individuals and firms navigate, in a more judicious way, the online world of sharing, re-posting, and copy & pasting.

You can download the Code of BestPractices in Fair Use for Online Video here or acquire it directly from their site at http://cmsimpact.org/codes-of-best-practices/. There is some other great content available on their website as well; take some time to peruse.