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I've been looking for a big improvement to Lists for a while now. The way it works now makes it almost useless. I want to be able to easily post a message or comment without hundreds of people seeing it. I want to post a message in context and only the people who would be interested in it would see it.

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If you click on the lock icon on Facebook to set privacy, you can type in names of lists to explicitly hide or specifically limit content (blacklist or whitelist). This would allow posting some piece of content controlled via a named list of people you've created.

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