Welcome to qwik.jp!
qwikWeb is a quick and elegant integration of mailing list and WikiWikiWeb. You can create your own mailing list and a Wiki site just by sending an e-mail message.
How to start
Send a non-empty e-mail message to the following address.
You'll receive a confirmation message, and after you reply to it, a new Wiki site and a mailing list is created.
See the Wiki page for more details.