Unlimited user license available for Webcrossing, which can support 5 websites. Comments appear chronologically without being organized into discrete threads. Examples include ichat and eShare's expressions. Webcrossing includes a chat function. Creates a strong sense of togetherness.
Communication can be random and messy.
Availability depends on method used. An efficient way for a group of people to communicate by email. Messages sent to the mailing list are copied to everyone subscribing to the list. If desired, the list-owner can check the messages before they are copied to all the list members. Requires minimal connectivity and skill.