This is very interesting fro twiiter:

Members can now “wiimail” each other without having to register any Wii System Codes between members! No Internet Channel or Web Browser is needed for active Twiiter members.

Here’s how it works:

Start your message with Dear MemberName,

Follow with whatever body text you want. Twiiter will do everything else for you, including adding the footer to the wiimail. If there is a problem sending the wiimail, Twiiter will let you know.

To set up for wiimails, be sure to checkmark the Receive Wiimails box under My Area.

http://twiiter.wiioperasdk.com

Link