I have had an acer netbook for a few years now and it is the perfect desktop companion! Sure, they dont do a whole lot, but it is built well (have droped it sever times with minimal/no damage), and they get great battery life. I mostly use mine to record stereo feeds off of sound boards when doing video projects (surprisingly clean input on mine that requires little noise reduction), as a portable HDD, or as a glorified MP3 player at home and work, but it also does well with the internet and simple flash games, and will do fine with open or libre office. The newer ones like the one you have linked are even better as they have real graphics instead of the intel junk mine is stuck with.
All in all I dont understand why people give netbooks such a bad rap. Sure, I would be in pain to use it as a primary system, but as a tiny cheap PC accessory that gets great battery life they are wonderful.