I'm still not convinced that tablets will be popular in the near future.  The current paradigm of tablet PCs–make the screen touch sensitive and chop off the keyboard–has major ergonomic and usability problems.  How do you hold it for more than 5 minutes? How do you input text without it being a complete chore? The software and hardware will require radical changes to solve these problems.  Maybe Apple has thought of something, but a big iPod Touch won't work.<p>Voice recognition isn't viable either.  Do people really want to talk to these machines all day–in offices, subways, coffee shops? Doubtful.