ISP Liability For User-Generated Content: A Survey of the Law 2013
Catherine R. Gellis, Digital Age Defense, has published 2013 State of the Law Regarding Internet Intermediary Liability for User-Generated Content. Here is the abstract.
Summary of recent case law and legislative efforts regarding Internet intermediaries hosting user-generated content. Covers 47 U.S.C. Section 230 and 17 U.S.C. Section 512, as well as other peripheral issues.
Download the text of the paper from SSRN at the link.