Size does not matter, this is true atleast for the Dell Mini 9 netbook. Such a versatile notebook, yes !, I use it as a notebook. For mac lovers, it is the easiest netbook that can be hackintoshed. If interested, check out the mydellmini website (http://mydellmini.com/).
Netbook is definitely an innovative product, I am experiencing the same myself. Tweeting, blogging etc are very easy through these netbooks, definitely a must have for KM 2.0 guys.