Since my beloved iMac is not terribly portable I bought an Acer Aspire One to use for basic internet functions whilst travelling.

Mine has a Linux OS :-: and an Atom processor ^ but the battery life isn't quite as promised; none the less I can live with it. Cheap as chips when I bought it last year; I added an external mouse as I dislike touchpad mice and was given this as a present from a clever friend.