The folks over at Reputation Managers have created a infographics outlining the Communications Decency Act (CDA). There is only so much a corporation or individual can do in response to online defamation. Fortunately for website owners and Internet service providers, Section 230 of the Communications Decency Act is their get-out-of-jail-free card.
This act frees website owners and ISPs from all liability in the case that a third party defames someone on their site. While the victim remains helpless and hopeless, website owners remain safely innocent. Many savvy users are not sitting back and waiting for someone else to have their best interests at heart
[Source: Reputaion Managers]