For those that have a iPhone this upgrade with its Personal Hotspots is very powerful.  Allowing you to share the phones network connection with other devices eg an iPad.

So the need to get an iPad with a 3G connection is not required, as can just use the wireless connection to wotk through the phone.

This goes for any other wireless or bluetooth enabled device that needs access to the internet.

I have used it on my iPhone/iPad and worked perfectly.