Twitter is rolling out two new features on its micro-blogging service: group messaging that allows users to have private conversations with groups of their followers, and a mobile video camera that allows users to share 30-second videos with their followers.
Until now the only way to have a group conversation was to have it publicly.
The group messaging function will allow users to have private conversations with a selection of their followers simultaneously. The members of the group do not all need to follow one another in order to chat.