What is the term for a Web user who publishes comments or submits feedback simply to annoy or anger others?

The correct term for a web user who publishes comments or submits feedback simply to annoy or anger others is "troll." In the context of online interactions, trolling refers to intentionally provoking or upsetting others by posting inflammatory, irrelevant, or off-topic messages. This behavior is often aimed at generating reactions or distracting from meaningful conversation.

Trolls thrive on the emotional responses they provoke, and their contributions typically lack constructive value. By definition, they disrupt the intended purpose of discussions, whether on forums, social media, or other platforms, focusing instead on chaos or discord rather than constructive dialogue.

The other options do not accurately describe such behavior: a moderator is someone who manages discussions and ensures adherence to community guidelines; a bot refers to an automated program executing tasks online, often lacking personal agency; and a contributor is someone who adds value through insights or content, promoting positive interaction and collaboration within a community.