I don't see Node as a fad. We're still early in the enterprise adoption of JavaScript on the server which means it may quickly develop real competition. Similar to how jQuery effectively beat out Prototype, MooTools, etc. Node could potentially lose out to another JavaScript server, but I don't see any competition coming. Microsoft is a major contributor to Node. Node uses Google's V8 which doesn't preclude Google from getting involved, but why would they? If you're arguing that running JavaScript on the server in general is a fad, then you're missing the parity, resource reuse, community, hiring capability, and run anywhere arguments from the original post.