iPod Touch Owners Slow to Upgrade to 3.0

"Nearly half of all iPhone users have already jumped at the opportunity to enhance the functionality of their handsets by installing the free iPhone Software 3.0 update, but the same can't be said for iPod touch users, who -- deterred by a $10 upgrade charge -- are adopting the new software at a snail's pace."

I'm not sure what happened last year, but I think more iPod Touch owners upgraded from 1.0 to 2.0. Is $10.00 US too much for an upgrade from 2.0 to 3.0? I've spent that on an application that I don't use that often so if it is something that I use everyday it doesn't seem too expensive. But maybe that is the point. I use my iPhone every day for texting, email, etc. but do the iPod Touch owners use their devices as much? Maybe this isn't that big of an upgrade for the iPod Touch owners because it really doesn't add enough functionality in the way they use their device versus the functionality it provides to the iPhone user? Any iPod Touch owners out there that haven't upgraded want to weigh in on this? If you haven't upgraded, why not?