10. The method of claim 9 , wherein querying the set of users determines a need for the new electronic forum.
9. An information stream monitoring method comprising: monitoring one or more email documents in an information stream associated with a first forum; comparing information about the one or more email documents to two or more rules, wherein the comparing is comparing newer of the one or more email documents to older of the one or more email documents to determine when a new topic of conversation has begun; querying a set consisting of users participating in the first electronic forum when at least two of the two or more rules are satisfied; creating a new electronic forum automatically based on one or more replies from the set of users, and subscribing each queried user of the set indicating interest in the new electronic forum to the new electronic forum, but not subscribing to the new electronic forum users of the set who do not indicate interest, wherein the two or more rules comprise at least two of the following: how long the electronic forum has been in use; how many email messages have been exchanged on the electronic forum; whether there has been a suggestion to create a new discussion forum; whether a certain number of email messages on a particular topic have been received within a predetermined time period; whether a rate of email messages exchanged on a particular topic is statistically greater than normal; or whether a certain number of forum members exchanged email messages on a particular topic within a predetermined time period.