I think that both types of computer have their place. I have an iPod Touch which would come under the "appliance" heading, and it is much more convenient for some things than a traditional desktop PC. On the other hand, for anything more than having a quick look at things on the internet and checking e-mails, I prefer the flexibility of a full-blown PC, where I can use whatever software I want and where I can configure things to my own liking.