[slantyyz]

An iPad comes in handy as a portable second display using ScreenRecycler and an iPad VNC client. I use it with my 13" macbook to satisfy real estate envy.

I put the less "active" stuff on it, since there isn't a version of JollysFastVNC (fastest VNC client I've ever used) out for iPad yet, although I hear it's in progress.

[petercooper]

Air Display is another option and costs under $10 - http://itunes.apple.com/gb/app/air-display/id368158927?mt=8

[elai]

Is it faster than air display? What i've seen from air display and competitors, it's fairly choppy and not that great.

[mikeyur]

This is what I've experienced. Bought Air Display and haven't used it more than once or twice because of the choppiness/delay.

[slantyyz]

Can be choppy, depends on what you're doing. I tend to put palettes and low priority stuff on them. In that regard, the real estate still has value to me.