Dont have a Dell, Dont tend to like them, had too much trouble with 90% of them that I have had to work on. However, I do have 16 computers in my home and 5 of those are netbooks. Dual or triple bootable from the HD on equiped machines and multiboot on SSD equiped models, I simply boot from external USB or SD cards.
The primary use of one machine is encoding DVD in to avi's I can play directly from my media server connected to my TV. Small, low power usage and the other half doesn't think it clutters the room. Not the fastest encoding capability in the house, certainly the least bulky
Going on Holiday? At least two fit in one laptop case, his/hers/kids and the airports dont mind as it is in one bag.
Bought my other half a tablet last year, unused this year doesn't like it, at best it will become an expensive ebook reader.
As for others saying about printers and scanners. None have issues in XP/Windows 7 premium/ Ubuntu/ Mandriva/ SuSE/ Debian
NO, tell a lie XP booted from a USB drive or SD card and iTunes throws a hissy fit, it has to be booted from an internal drive for iTunes to work. A reason to avoid iTunes?
Screen resolution! OK if you RDP/VNC the netbook on to a desktop, more of a pain in the opposite direction. Using scaling looks awful! scrolling is annoying. Hang on use the right OSes and I will just forward the output for the application across to the netbook.
Apart from the latest/greatest games Netbooks work fine for nearly everything as long as you dont expect latest/greatest performance.