I've considered this also...
Seems like a very cool thing to do for a webmaster since 99% of my work just involves text editing of html, perl, php, blah... file transfers and web browsing. That's it.
On a rare occassion I do photoshop work but I suppose eventually I could pay someone to do my graphics shit for the convenience of having such a tiny machine to do all my work on. Why do I need a big clunky machine to edit text files...
In another year or two the wireless connections will be fast enough -- I'll be nomadic and join the Boneprone World Tour
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UN-BAN EXXXOTICA! Boneprone-4-Life