Watermarks are a great way to protect your photographs if you don't want other people misusing them. We will create a simple but effective text and turn into a Gimp brush so you will be able to stamp your work.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
As from November 11th Google will launch a so called Shared Endorsements for products or services which will allow them to use your picture when displaying ads to your friends.
Google by far isn't only a search service or an e-mail provider. I will introduce you to their Google Docs service which you can use as your very own office in the cloud.