Adobe Bridge: How I Mark Used Images

Someone once admitted that he had trouble remembering which digital pictures he had already edited in Photoshop. I mark them in Bridge (in Photoshop CS2) as follows:

After using the image and saving it to my hard drive with a descriptive title, I close it and return to Bridge (which displays the original pictures in thumbnail versions). Usually my image is still highlighted. I click on Tools in the Menu bar, then select Batch Rename. I use these selections as shown:
* Rename in Same Folder
* Current Filename
* Name + Extension
* lowercase

This just takes a few seconds because my selections are saved for next time. And I can see at a glance which pictures I've used because the titles are in lowercase.