I built an automatic version the creative server that uses a timer to make the pistons all fire every few minutes. It just doesn't work well in the regular game because mobs are disabled on the creative server and they use a server that groups items more than the default game so in a normal game, the items fly everywhere. So I built this one to plug up all the holes and add an ice floor for extra speed. I just don't like having a 100 repeater timer so I didn't use it this time. I also didn't see a need in making it harvest when no one was using it. If I find a way to either make a more compact timer or something, I may try that again.

I would have went with a bud switch but in 1.5 those aren't gonna work the same, possibly not at all, so I didn't want to use them and have this hole thing been broken in a week or 2.

These are the server they operate:
Creative: mc.renmx.com
Survival (includes towny and deadbolt): mc.renmx.com:3

You have to have a rank to build on the creative server though because too many people joined just to grief. It's easy to rank up though, just build something cool on the survival server or donate a dollar. If you rank up high enough or donate enough, you get access to world edit commands. I use them to help build these large farms and then export it to SP for final touches and image renders and things.