Wireless Text Messaging w/o A Phone?

beroul asks: "I don't want a mobile phone (I'd never use it for voice), but I'd like to be able to send and receive text messages using some sort of small, inexpensive wireless device. Does anyone know of such a thing? I've looked for a send-and-receive pager, but they seem to have vanished as everyone opts for mobile phones. I live in the UK, so I'm looking for something that will work here. Being able to send SMS messages to people who have mobile phones would be a plus."