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n. The spreading of salacious gossip.

n. spreading malicious gossip

adj. typical of tabloids

"One of the fears that I often hear from people when talking about the growing power of social network sites, blogs, as well as micro-journalism and micro-comment platforms is the one of scandalmongering, or a tsunami of mistruths and reputational attacks that take down some high profile person."

sensational   

gossipmongering    gossiping