A Listserv is a popular automatic mailing list server. People sharing an interest may "subscribe" to a given discussion, and other subscribers' contributions to the thread are distributed to the entire subscriber base via e-mail. The result is similar to a newsgroup or forum, except that the messages are transmitted as e-mail and are therefore available only to individuals on the list. It's great for keeping up with online "discussions" of projects and issues.

Everyone is welcome to join any or all lists - just follow the instructions below:

Announcements	Discussion	After School
Click to join PS261announcements or send a blank email to: PS261announcements-subscribe@yahoogroups.com Strictly moderated (postings must be approved). School-related announcements. All welcome. (To unsubscribe, send a blank email to PS261announcements-unsubscribe@yahoogroups.com)	Click to join PS261discussion or send a blank email to: PS261discussion-subscribe@yahoogroups.com Unmoderated. Any topics of interest to PS261 Community Members. (To unsubscribe, send a blank email to PS261discussion-unsubscribe@yahoogroups.com)	Click to join PS261Afterschool or send a blank email to: PS261afterschool-subscribe@yahoogroups.com Unmoderated. Afterschool-related Discussion. (To unsubscribe, send a blank email to PS261afterschool-unsubscribe@yahoogroups.com)