Bafio has updated his WiFi Chat program for the Nintendo DS. Changes:

Version 0.83beta – Updated to the latest version of libfb. Better font display, some small changes here and there, code cleanups. Clock added. The server now creates a paginated archive of the messages, so I suggest to update the server too. Some other small changes I can’t remember. Added a simpe ip filter to abn (temporary) abusive users. Light blinks when wifi is enabled. Also, when the screens are not lit, a sound announces new messages (if you press X on the top right corner) (this was undocumented).

http://bafio.drunkencoders.com/