Ulteo uses what looks like a VNC-like remote desktop solution that runs inside web browsers to provide an online services for the OpenOffice suite. Check it out! The obvious, unsolvable problem is of course latency (since every screen update requires a full round-trip between client and server) but other than that, it’s pretty interesting. And they give users up to one GB of online storage for documents, too.
Just one minor pet peeve with Ulteo’s site and applications: they force a user interface language on you based on your location, god I really hate that. And the manual language selection you make on your site profile doesn’t carry over to the remote desktop app, so you have to override your language twice. Oh well…