Is there a way to locate your iPad if it gets lost or stolen? Yes. Not only possibly can you locate it, but you can display a message or play a sound on your iPad, lock it using its existing passcode, or even erase all data on your device remotely, with help of the feature "Find my iPad" that can be enabled on your device.
Find my iPadOpen Settings app, select "Mail, Contacts, Calendars" and check that "Fetch New Data" is set to Push.
Select "Add Account...", choose iCloud (or MobileMe in iOS 4), then enter your Apple ID and password.
When prompted, click "OK" to allow the service to use the location of your iPad.
Keep the setting "Find My iPad" on and tap "Save".
Then try to find your iPad:
Sign in with your Apple ID at icloud.com (or me.com for iOS 4 users) using a PC web browser, or another device installed with Find My iPhone.
Once your device's location is updated on a Google map, click the right-angle or info button next to the device name.
Click "Play Sound or Send Message", "Remote Lock" or "Remote Wipe" as you need to.