Um… take a look around, you're currently posting in a forum devoted to that very project! We've got a world generated by Fractal Terrains, and we split it into something like 30 tiles. We're currently working on developing more detail in the current world section before opening another set of tiles. Look through the maps in this area of the board, and check out the wiki. If you see something that strikes your fancy, post up a thread and start mapping!