One new feature, reply approvals, will allow you to decide which replies from other users will appear on your posts - before anyone else can see them. While Threads, like other social networks, already offers tools that let you limit replies to people you follow, your followers, or people you mention, the new feature allows you to keep your replies open to all without the negative consequences of having discussions derailed.
Reply approvals will require more legwork and attention, but it allows Threads users to monitor and individually select which replies will appear publicly on their posts before anyone else sees them. Users will be presented with a list of pending replies and can make them public using approve and ignore buttons for each one. To save time, if all the replies look okay, or if they all appear to be spam from bots, the entire pending list can be approved or ignored in one fell swoop.
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As noted, Threads group chats can include up to 50 other users, and n ew members can only be added by someone that they follow (only chat admins can remove members). You'll have a 15-minute window to edit the messages you send to the group discussion, while users will also be able to report a group chat or specific messages.