So I am typing this on my new eee pc. It is fantastic - about 5hrs battery life, light as anything, it comes with me everywhere. It is not for long term use though - the screen hurts your eyes, the keyboard feels cheap and is unresponsive and the touchpad is rather fiddly. Also the storage space is annoyingly partitioned into a 4gb and an 8gb drive which means that windows update often fails due to lack of space. In actual fact I am planning on buying an external hard disk, which then adds to the weight/size. Hrm.
On the plus side, it is very nifty for the internet, and the fact that it is so small and light does mean I almost always have it with me. It is fantastic for catching up on emails or paperwork whilst sat at your favourite cafe, and it alwys gets attention - everyone is envious! So all in all I love it, and am very glad I made the purchase. Highly recommended, but be aware of its limitations - it is not the right choice for everyone.
Hope this helps!