https://www.npr.org/2020/11/14/934833214/conservatives-flock-to-mercer-funded-parler-claim-censorship-on-facebook-and-twi

Parler, founded in 2018, touts itself as “the world’s premier free speech platform.” On Saturday, CEO and co-founder John Matze said one of the privately owned company’s early investors is Rebekah Mercer, who along with her father, hedge fund billionaire Robert Mercer, has been a backer of President Trump and is also a major donor to conservative causes, including Breitbart News and former White House strategist Steve Bannon.

It has hit 10 million members — more than double the 4.5 million it had last week, according to Jeffrey Wernick, the company’s chief operating officer.
Still, that is just a tiny fraction of Twitter’s 187 million daily users and Facebook’s nearly 2 billion.

Experts say “free speech” approach lets false claims flourish
Gab, an alternative social network that has become notorious for hosting anti-Semitic and white nationalist content. It was used by the accused 2018 shooter at a Pittsburgh synagogue.

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more on echo chambers in this IMS blog
https://blog.stcloudstate.edu/ims?s=echo+chamber