From the Inside iPhone 2.0 series: the new iPhone 3G Software on AppleInsider.

  • In Safari you can touch & hold on graphic elements to bring up a Save Image dialog.
  • In Safari, a double tap near the top (bottom) of the page will scroll up (down) by a page.
  • Everywhere (?), hold the home button and press-release the lock button on top to take a screen capture. The image is saved in the Saved Photos album in the Photo application.

Anyone cares to share more hidden UI tips?