Anonymous Speech

The right to anonymous speech is a First Amendment protection recognised by the United States Supreme Court in McIntyre v. Ohio Elections Commission in 1995, which struck down a ban on unsigned campaign literature and held that an author's decision to remain anonymous is an aspect of constitutionally protected freedom of expression. Lower courts have extended the principle to speech on the internet, where pseudonymity is common.

The doctrine matters directly to Reddit, whose participation model rests on users posting under pseudonyms rather than their legal names. When a litigant seeks to unmask an anonymous speaker, for example through a subpoena in a defamation case, courts apply heightened tests rather than ordinary discovery rules. The leading standards are the Dendrite test, which requires notice to the speaker, identification of the specific actionable statements, a preliminary evidentiary showing and a balancing of interests, and the Cahill test, which requires the plaintiff to muster evidence sufficient to survive a summary-judgment motion before identity is disclosed. These safeguards exist to keep the unmasking process from being used to harass or silence anonymous critics, and they are the legal backdrop to Reddit's repeated court battles over user identities.