Purpose: silliness, I guess ;-)
The joke here is that Wiki is supposed to be based on a Hawaiian term.
This item could also provide a sandbox (sand beach?) for folks new to wiki editing to experiment. That's what I'm using it for right now.
To keep in with the theme, you can find out about the current weather in Hawaii at: http://www.hawaii.edu/News/weather.html .
JC: Larry, there's also the Graffiti page, if you ever run out of space on this page ... :o)