A netbook is definitely for limited use cases. Mine is mostly for this site (something I can easily grab and toss in my suitcase when traveling), and casual browsing in bed at night. I already have a laptop for playing games, but found it to be a bit unwieldy in bed.
You raise an interesting point on games. I’ve found some sites that discuss gaming on netbooks, and it looks like some older games like Baldur’s Gate 2 and Planescape Torment will work fine, so that might be my next project.