I would just like to say that me and Milo will be doing a sweep of Creative. The sweep is needed because we have noticed a few unauthorised structures in the flat area that fall under these critereas;
Labs, we have a lab area in the hills and even a portal for you to use to get there. Labs are ugly and usually only temporary in the first place. The flat area is for creative work.
Towns, towns are for Survival and honestly the only reason to have a town there is for a template for survival and should therefore not be for permanent homes.
Landclaims, we ask everyone to fully surround their work with fences and fence gates with a few signs with your name. If we spot a structure that doesn't do this, we will remove it. that way other players can use that space properly. Also, if you claim a HUGE amount of space, you need to contact me or Milo for permissions with what you plan to build there. This is usually considered for claims that are more than 50x50. The 20 block space between claims still stands. If you wish to build directly next to someone, ask their permission first. If we hear any complaints, we may need to move certain structures.
Random Rails, we have rails at the spawn area to get to places in creative, we don't want players to build rails out in the middle of nowhere unless the land, it is made on, is claimed by the owner. I.E. If you own the land, you can build rails on it. It could be an idea to build rails around your own creation to help show it off

Just to clarify, you are allowed to use redstone and pistons in creative structures for doors or other creative things. But just don't make it into a lab.
The sweep will begin in three weeks time from 25/11/2011 , giving you plenty of chance to move or properly claim your structures. We will not make any exeptions.