The ABA Journal reports [link no longer available] that the number of libel suits has been steadily dropping in the United States:
Recently, in Barrett v. Rosenthal, the California Supreme Court held, similar to most courts addressing the issue, that bloggers are immune from being sued for “distributor” liability under defamation law. Under defamation law, the original speaker of a defamatory statement (a false statement that harms a person’s reputation) is liable. A “distributor,” one who further disseminates a falsehood spoken by another and who “knows or should have known” about the defamatory nature of a statement, is also liable. A federal law, 47 U.S.C. § 230, however, provides: “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.” Most courts have interpreted § 230 to immunize the operators of websites or blogs against distributor liability for comments posted by others.