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Big Tech Wants You Trapped. The Open Web Sets You Free
(www.joanwestenberg.com)
This is a most excellent place for technology news and articles.
I hear echo chamber brought up a lot but never really have seen examples of a place that doesn't have an echo chamber.
I think that's just the natural result of people forming communities as opposed seeking out battle grounds for adversaries.
Only thing that can be done is offering people the tools to freely form as many communities as they want with the main barrier being who feels compelled to join the new echo chamber community.