We don't! However, Freech uses a twofold approach to preserving content quality:
Say It Thrice: Freech is dedicated specifically to the freedom of Ideas, so we impose some helpful hurdles to nudge creators into thinking through their post essentialy 3 times: Once for the main Essay, again for the Summary, and again for the Headline. Impulsive or rude posts will hopefully be reduced by this requirement, and thoughtfulness of content on Freech will hopefully go up!
Tags & Triggers: Freech offers content consumers a Trigger system allowing users to list Trigger categories they'd rather not be exposed to. Their feed will hide posts which match their Triggers. They can also select how severe a Trigger is. If only a mild trigger, then searches may get some results which push limits, but they'll be kindly overlaid with a Trigger Warning so the user can decide if they want to see more. This is our way of offering a Buyer Beware system to social media!
We use a combination of Tags, Votes and Response Types (Emotional, Logical, etc. See how!) to accurately categorize a post, largely for its Topic and Tone. Matching those to Triggers, we maximize Free Speech while minimizing exposure to offensive material.
First, we only allow one account per human - not per email address. We also adjust a User's voting power based on how much he dogpiles the same content creators or sways with fellow ideologues. Similarly, a User's Reputation and Civility impact his voting power. In this way, individual thinking and courtesy is rewarded. As voting power decreases among a group of users, their ability to mis-tag posts goes down. Since a human can't go make a new account to reset his voting power, the mob he's part of is kept at bay. We're all about free speech, but want to channel it for productive dialog instead of clone wars.