May 11, 2009: Worlds Data Now Available
Actually it's been available since the start of Ynsanity, but you can now find data on all the worlds in your game by going to the "show all worlds" page (the world icon in the top frame). At the bottom of that page is a link to worlds.csv (for PUB games); Mega games have a separate csv file for each turn in the game. (Solo games don't have this file. Sorry.)
You can import the data into your favorite spreadsheet program to crunch numbers, or use it to create your own mapping program.
And remember there's also a units.csv file available on the units help page for each game.