"Mailing lists 2.0" is an interesting term. It's kind of the principle we have used in building MooGroups http://moogroups.com http://moogroups.com. Instead o

"Mailing lists 2.0" is an interesting term. It's kind of the principle we have used in building MooGroups http://moogroups.com http://moogroups.com. Instead of setting up a mailing list only for a specific group of people you email often, we make it so that essentially each group email is its own mailing list, so people who are part of that group email can email each other in an organized fashion or opt-out as needed. Unlike Google Wave, MooGroups is available now, being improved upon everyday, doesn't require any signup, and allows you to use any email system.