Wi-Fi is certainly the preferred connection mechanism for the device, which will happily connect to a network, download RSS feeds and email, and disconnect, all without the user being aware. Indeed, whilst wandering around London with the N800 in my pocket it had been downloading up-to-date information without my knowledge. In a mobile phone such behaviour would be annoying, as it would probably incur network charges, but on a Wi-Fi tablet it was pleasant to have this information close to hand when I wanted it, without having to think about when to connect or where.