Wirelessly posted (iPhone 3G: Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0_1 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A400 Safari/528.16)
I like my Mini 9 and the smaller screen was one of the main reason I chose it over bigger alternatives like the Samsung NC10 etc. However on one bag leisure trips where space is at a premium, I'm leaving the netbook more and more, as I can do 80-90% of what I need on the iPhone. Skype and Sling were the last two apps that I needed the netbook for, but obviously not any more.
If I need to do work, I'll bring my proper laptop.
Netbooks still have a niche, but as fully functioned phones get better, that niche erodes somewhat for most leisure users IMO.