Someone that constantly induces silence at online communities (twitter, facebook etc.) by sharing content that is totally detached from what the majority of the audience expects.
Typical silencers include: porn, pain and pain associated with porn.
@christiansrcool says: What a beautiful morning! at 08:27
@normalguy27 says: Damn! Burnt my pancakes again. at 08:28
@ timeline silencer says: Crime took my face. It forgot to take my knives. I´m coming for you! at 08:31
@anothernormalguy says: is google out? at 08:45