How to add such watermarks in your Photographs ???
Here are some simple steps to do this: <
1. Open your photograph in Editor.
2. Select Text tool from Tool-Bar on left side.
3. Write the watermark text you want.
4. Now select Bevels in Effect Panel, just above Layers Palette.
5. I have applied "Inner Ridge" Bevel in above case, you can try with other bevel styles.
6. Click on "fx" to launch Style settings dialog to control other things like Inner/Outer-Glow, Drop Shadows Etc.
These days I am exploring simple Watermarking techniques and would work on some action which can create quick watermarks for different sized images. Will share soon...