Comments are posted to a webpage in chronological order forming discussion threads. Available as freeware, e.g., WWWBoard or, in a more sophisticated form as Webcrossing, which has many asynchronous conferencing features. Different time-zones and schedules easily supported by asynchronous format. Lack of editing and customization can be a drawback. 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.