Creating and embedding a logo in your photos

Here is a sample image (shot from my camera phone, so take it easy on me) that I embedded with a watermark/logo.  One method for doing this is:
1. create logo (recommend a black and white image) and adjust size
2. save logo at the same resolution as your photos
3. drag the logo into the photo (in photoshop), position logo properly
4. select the logo layer in the toolbar
5. adjust the opacity until the logo is unintrusive, yet still visible
6. select "flatten image" under the dropdown "layer" menu
7. save image file in desired format

The instructions for legally embedding a water mark (registered) can be found here:

http://livedocs.adobe.com/en_US/Photoshop/10.0/help.html?content=WSfd1234e1c4b69f30ea53e41001031ab64-7725.html