You may recall that this space used to contain a location service which was used in conjunction with a phone application (or Google Latitude®) to share locations on a map and set up proximity alerts and other fun location based features.
Now, however, it is an empty space waiting for the author's next great idea and enough free time in which to implement it.
Who knows? Maybe this jaded Dave fellow will eventually craft an even better version of the WheresDave App (now that Apps are a big thing and Google has EOL'd Latitude).
P.S. No, it's not an April Fools' joke.