And again, nice to know people read the comments...
@Putale: You can run windows 7 on a netbook.
@TomSEA: You can do some "serious" computing, I currently run sql servers for projects, some data architects and netbeans on a netbook, it might not be the most powerful or speedy gonzalez of all the possible solutions, but for the mobility it CAN do some "serious" computing.
Wait until next gen netbooks, with all the goodies comming as mainstreams SSDs, 1,8" HDDs, new atoms and more competivity from amd in this area (And VIA too), most will want a couple.