I'm interested to see how this is going to work when you start throwing other games into the mix. With Minecraft, updates are fairly straightforward. With some other games (CSS, TF2, etc) the update process is pretty complicated. You've got to either roll your own updater, or have a unique steam account per server. Then you've got to run the updater, and hope it doesn't crash midway through or hang indefinitely. Once you update a server, you then need to check that all the plugins installed aren't breaking the server (or need updates themselves).<p>It's pretty straightforward to run thousands of stock servers, the difficulty comes in when you've got thousands of different combinations.<p>Edit: I'm also noticing DayZ on that page. They're perhaps the most commercial hosting unfriendly game I've ever encountered. Good luck getting instance IDs from them.