I haven't tried the yet, but my kids' school is switching to <a href="http://stackable.com">stackable.com</a> soon, and it's looking very attractive: it scales, load balances, and has a great dev environment, without you having to worry about managing a server. I haven't had time to move everything over yet, so if anyone ends up trying them before I do, let me know how it goes.<br>
<br>-V<br>