You’re waiting in line at the grocery store, surfing the net with your iPhone and you’ve found a funny image that you want to share with your spouse. You could take a screenshot. Or, you could be a pro and actually save the image to your saved photos on your iPhone.
How: Simply touch and hold the image you want to save and you will be presented with a menu that will give you the option to “Save Image”. If you choose to click that, you will then find your funny image in your saved photos. From there, you could email it to your spouse, but by now you’re hopefully at the front of the line paying for your groceries.
Note that this functionality isn’t available in all iPhone applications, but you should definitely find it available with Safari.