US Patent 7571212 Interactive web collaboration systems and methods

A topic room is provided in which one or more individuals or other entities may collaborate on topics of mutual interest. Multiple individuals or participants may use the topic room to communicate in real or non-real time and may work together to create, browse, modify, comment on, and perform any other suitable action on content. A chat room within the topic room receives, records, and transmits the communications and all activity in the topic room to all participants as messages. Client processes at a participant's user equipment may listen to the messages and take particular actions. For example, one participant can follow another participant as that participant browses through material by using the messages received from that participant.