the defining feature of fiesta.cc (as opposed to posterous, etc) is that list names don't have to be unique - so anybody can make a new list called "[email protected]" without worrying about registering the name or running into collisions.

Right now messages aren't saved at all (for privacy reasons). In the future there will be optional (opt-in) archiving like yahoo/google groups has.

Okay thanks. It seems like an interesting concept, something that should be native to Email perhaps. However, outside of this thread, if I visit your site (as an average user), the concept of how it works doesn't seem easy right away. I'll have to play/test to figure it out.