Chats and Forums

Allstat Statistics Mailing List
A UK-based worldwide e-mail broadcast system for the statistical community, operated by LTSN Statistics. Searchable archives.
http://www.ltsn.gla.ac.uk/allstat/

Clinical Pharmacology Statisticians Discussion
Topica email list for statisticians and statistically minded scientists with an interest in clinical pharmacology.
http://lists.topica.com/lists/cps/

Statistical List Subscription Service
An easy-to-use, form-based way of subscribing to and unsubscribing from a variety of statistical e-mail discussion lists.
http://www.stattransfer.com/lists.html

Statistics-Related Discussion Groups
A list of mailing lists at the Minitab site.
http://www.minitab.com/resources/maillist/default.aspx