Tis not I used to have it as what you think it should be but I changed it because Green_Mystery said that it was wrong and that 5% would scream not 95%. And also,cushy would someone even like JB?
I made one on smp4... It was pretty epic... 100x100 Blocks. It is still there; but people haven't replanted... *sigh*
You would be suprised of what people will grief. I built a moron test consisting of a dirt shack that was about 3x3 and had a hole for a window and door. It was leveled in about an hour.