Link-a-Day: World Generator

Last week, I posted about time wasters.  Well, how about something that can both fun and helpful.  If you write in a speculative genre that isn't set on our world, you have to create your own world.  There are tools out there to do just that.  The one I like in particular is Fractal World Generator.  Not only can you pick the type of map, but chose criteria that affects the world you get--like percentage of ice and water.  Then you can save the map it generates.  Neat-o.