I have my own! 4G RAM, daily free backups, etcetc, I'm putting in a good word for Serverminer here because it's stable and has cost way less than elsewhere honestly, especially when you include backups. Good for just playing with pals when you can't run the software yourself! Anyways, it suits me and the people who play - it's a whitelist-only, friends-of-friends sort of deal. Laid back exploration and building, mostly. We plan on starting from scratch once the cave update drops.