造谣者
[zào yáo zhĕ]
'Rumormonger' straightforwardly denotes someone who circulates untrue stories about other individuals or things. Though typically carrying negative implications due to its association with falsehoods, gossip or malicious intentions, within online contexts it may carry varied interpretations based on the specific situation - potentially highlighting satire, criticism, playfulness depending upon usage context and intention behind the nickname choice.