Yeah sure thing, I'll put one in when I get home today that's every 5k cords on each axis or something similar to that
Here is an updated map with coordinate guides every 5,000 blocks in each direction. On the far sides of each line tells how far on either the x axis or y axis you are. Main post was updated with this as the new main map. http://www.gigapan.com/gigapans/186196