Members of a social networking system group are provided multiple interfaces to communicate within the group. A first communication interface allows a user to upload a first content item; in response to this, the first content item is transmitted via a first communication channel to online members of the group. A second communication interface allows a user to upload a second content item; in response to this, the second content item is transmitted via a second communication channel to online and offline members of the group. Transmission via a first communication channel may comprise sending an instant message containing the first content item. Transmission via a second communication channel may comprise displaying the second content item on a group message board. Both interfaces may be contained within the group's web page or may be contained within another web page within the social networking system or outside of it.