Tether your iPad to your iPhone with MyWi
http://www.redmondpie.com/tether-iphone-with-ipad-9140643/
Easy-to-use guide on how to tether your WiFi-only iPad to your iPhone so you don’t need to get an iPad 3G with a separate data plan. Note: this requires a jailbroken iPhone and the $9.99 MyWi app (available on Cydia or The Rock).
