I only use my phone to phone. I don't understand how one can spend so as much (if not more) money as for a computer, for a device that is actually a locked-down computer, that doesn't let you do all the things you could do with a computer... For the price of some smart phones, I could buy 2 laptops. Add in 20€ for a 3G modem and there you go.
If there is something DeviantART should've done a long time ago, that is making an app for iPhone, iPad, Android, Windows Phone Store, and Windows Store. I still cannot believe deviantART hasnt made that. The reason why sites such as Facebook, Twitter, and YouTube have become successful, is because they have a good mobile platform. There are even sites like Instagram or Vine that are only mobile. In this new era we rely on apps, on notifications in order to keeping up with things. Please DeviantART do this for us.