Netbooks are very useful devices, not just for web surfing and looking at your email for for all sorts of different purposes, some more obvious than others. These devices are all about mobility, but while you are out and about there could be situations where setting up a wireless network to connect a group of machines might be handy and of course Internet access makes this even more useful. Maybe you have a device you would like to use with the Internet while you are away, but it only has WiFi connection (e.g. some portable media players like the iPod Touch) and you cannot plug your 3G mobile broadband modem into it. As long as you have 3G coverage you can have a WiFi hotspot wherever you go, and you don't need to bring a dedicated router as a netbook powered by Ubuntu (or Easy Peasy) can easily fulfill this function.