The Samsung Galaxy Tab 10.1 Touchwiz update finally added native screenshot support--hoorah! Here's how to use it and share the screenshots, all without having to connect it to your computer:
Step 1: In the taskbar, you'll notice the new Screenshot icon next to the Recent Apps icon. Tap the Screenshot icon to take your screenshot. You'll see a message pop up that says, "Screen captured. Saved as image file."
Step 2: To find your screenshot image, go to your Apps list and select "My files."
Step 3: Scroll down to the bottom and select the folder named "ScreenCapture."
Step 4: Select the image you want to share then tap the sharing icon.
Step 5: Choose which method you want to use to share the image.
There you go--nice and simple. Now you no longer need to use the Android SDK and a USB cable just to take screenshots of your Galaxy Tab 10.1. Thank you, Samsung!