Flame War
Noun · Hacker Culture · Origin: 1990
Definitions
Flame War is an online argument that has escalated from a discussion or debate into a hostile exchange of personal attacks, insults, and increasingly aggressive messages. The term originated in early internet culture on Usenet newsgroups, bulletin board systems, and mailing lists where text-only communication stripped away tonal nuance and disagreements could quickly spiral. Flame wars often begin with a provocative statement or controversial opinion and escalate when participants prioritize winning the argument over constructive dialogue. Common triggers include programming language debates (tabs vs. spaces, vim vs. emacs), political topics, and product comparisons. Flame wars are destructive to online communities because they drive away constructive participants, consume moderator resources, and replace useful content with noise. Community strategies for preventing flame wars include clear codes of conduct, active moderation, cooling-off periods, and Godwin's Law (the humorous observation that as an online discussion grows longer, the probability of a comparison involving Hitler approaches one).
In plain English: A nasty online argument that goes on and on with people getting increasingly angry — usually about something that doesn't matter much.
Godwin's Law (1990) states that as a flame war grows longer, the probability of a comparison involving Nazis or Hitler approaches 1. By convention, whoever makes the comparison first has lost the argument. Modern flame wars have migrated from Usenet to Twitter/X and Reddit.
Example: 'The TypeScript vs. JavaScript thread devolved into a flame war within 12 replies. Someone invoked Godwin's Law by reply 47.'
Source: Godwin's Law