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Reddit will warn users who repeatedly upvote banned content
(www.theverge.com)
This is a most excellent place for technology news and articles.
Plus side here is that people can move to another instance and start commenting right away as opposed to being shadow banned for a period in certain subs and having to build up enough karma to not automatically have every comment flagged.
People aren't stuck to the policies of instances they don't agree with whether it be reasons for bans or what instances are blocked or whitelisted.