This is an interesting announcement. In Google’s vision of the future, a printer can make itself available to the cloud and then be used from any internet-connected device. This includes cell phones, but also web applications. While I like the idea, I wonder if people will be willing to take the security risks. Discovering printing services in a LAN (via zero-configuration service discovery, as implemented by Apple’s Bonjour and Microsoft’s Universal Plug and Play) might be more palatable.
Update 2010-01-26: Google brings Cloud Print service to mobile Google Docs, Gmail