As far as I see it, Nokia is marketing N900 and future Maemo devices as something that is not meant primarily to be used as a phone, unlike the usual smartphone is. It has phone capabilities, but that is not the focal point of the device. If you look at the rest of the N series, except maybe N97, all of these devices are actually primarily phones, and only secondly they are mp3 players, cameras, navigational devices, and so on... It's pretty much like E90, yes it is a phone, but other features just overshadowed and vastly surpassed the phone capabilities(at the time).