Communications Decency Act, 47 U.S.C. § 230(c), is an internet legislation that went into law in 1996. It basically states that any owner of public online forum is immune from liability as long as the owner are hands off.
It states: “No provider or user of an interactive computer service shall be treated as the publisher or speaker of any information provided by another information content provider.” The CDA generally protects website owners and operators from most forms of liability; “Most courts have held that through these provisions, Congress granted interactive services of all types, including blogs, forums, and listservs, immunity from tort liability so long as the information is provided by a third party.”
For more information Visit the CDA Wikipedia page.