Twitter Launches Invite-Only Communities to Compete With Facebook Groups

Twitter today announced the launch of a new "Communities" feature that's meant to take on Facebook's popular Groups by providing a space where people can share discussions on a specific topic.
An invite-only feature at the current time, Communities are created by Twitter users and are self-moderated. Community creators who are invited by Twitter to participate can invite an unlimited number of users to their group.Members of a Community will see a new option to choose an audience in the tweet co