Quote Originally Posted by Jumquat View Post
ech·o cham·ber
/ˈekō ˌCHāmbər/
noun
1. an enclosed space where sound reverberates.
"purpose-built echo chambers allow the addition of natural-sounding reverberation to the recordings"

2. an environment in which a person encounters only beliefs or opinions that coincide with their own, so that their existing views are reinforced and alternative ideas are not considered.
"people are living in partisan and ideological echo chambers"
Pretty much the definition of what I'm hearing on here right now.