If you navigate to a site and you're looking for a certain word, you can utilize the search field in mobile Safari. Under Google suggestions on the iPad and iPhone/iPod touch, you'll see "On this Page" with the words you're looking for.
Awesome when you're looking through forums and long articles.
You've probably seen the hubbub abut the orientation lock button on the iPad turning into a mute button. Well it's true. To lock the orientation of your iPad you have to double tap the home button to enter the app tray and swipe left.