Meta has long required Facebook users to post under their real names (with some exceptions ), but at least for Facebook ...
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Facebook adds nicknames in Groups to take on Reddit

Facebook is rolling out a new nicknames feature in Groups that lets people post under an alias instead of their full profile name, a clear attempt to capture some of the pseudonymous culture that has ...
Facebook has begun rolling out a nickname feature for Groups, giving users the option to post without using their real names.
Facebook has unveiled a new feature that allows users to use nicknames within Facebook Groups, posing a direct challenge to ...