(assychronous communication) Discussion Lists are the most basic and easiest form of online gathering places to participate in assuming that each group member has access to email. Users do not have to "check in" somewhere to take part in the conversation, they simply read and reply to group emails.

Also known as mailing lists, these are email distribution lists based on a particular topic or for a particular group. These lists are only accessible on a subscription basis. Students and teachers can both post and respond to messages.