I am currently typing this post on an Acer Aspire One.
Here's the issues I have after owning it for about 6 months or so.....
RAM upgrade (much needed) is ridiculously difficult and it only holds a max of 1.5GB. You have to, basically, disassemble the laptop to do the upgrade.
Video streaming lag. If he wants to watch porn (of course he does) then he'll have a rough go of it. Videos load but the computer can't keep up with the workload. The video freezes while audio continues even if the buffer is full. It's just a weakness of this netbook.
Get the full 10" screen. Don't get the 8.9" like me. The computers are the same size but I have about 3/4" of bezel around the screen. I'd rather have that area taken up by actual screen real estate.
No bluetooth. Never thought I'd use it so I didn't care. I have an HTC Touch that I would rather tether with bluetooth than a bulky cable.
Nothing else. That's it. I really love having it and since I deploy all of the time, it's nice to lug around 3 pounds of shit rather than 10 pounds.