Update 4/12/12: Appfog do now provide node 0.8, so my previous method of deploying works again.
Previously, I've written about deploying a meteor.js application on appfog. Unfortunately, meteor have recently released updates (0.4.1 and 0.4.2) that require node.js 0.8 instead of 0.6. Appfog only supply node.js up to 0.6, meaning that until Appfog updates its stack, applications using recent versions of meteor don't seem to be deployable there.
Until that time, I'm using the hosting available directly through meteor.js for my application demos.