I have one and Ive only used it once on a trip. Its nothing really fancy, although I should probably see if I can do anything cool with it, like downloading ring tones etc. The only reason I will probably need it is for some school trips, or getting picked up after a late practice, etc.
I wish I could get a tablet pc though, that way I could surf the web and chat, but also it probably be better than my computer Im using now.
But I guess thats why I use my dads computer a lot more.