Is there a place to post good map seeds?

[Diglett]

No idea, but I got a good one recently:

Map: Valley
Size: Large
Climate: Fair
Disasters: On (no idea if this affects the map)
Difficulty: [CC] Medium+

Map seed: 576151967

Starts with horses, which is ok, but main thing is the excellent location for a big town just southwest from where you start.