This is a really cool way to save your Automator workflow. When you save the workflow as an application, it will appear just like an application file (.app) and will allow you to run the workflow by double-clicking (just like a real application). You can save a workflow like this by clicking File > Save, and selecting "application" from the format drop-down menu.
You can also save any workflow as a plug-in for the Finder, Folder Actions, iCal Alarm, Image Capture, Print Workflow, or Script Menu. Let's try saving the workflow as a Finder plug-in. Select File > Save As Plug-in.
When you save an Automator workflow as a Finder plugin you will be able to access the workflow by right-clicking in any Finder window (including the Desktop) and pointing to More > Automator. (If you are using Mac OS X "Tiger," you can access this menu by right-clicking and pointing to "Automator"). In this Automator section, you will find all of your saved workflows, just click on one and it will start running.
I hope this shows you a little of what Automator can do for you. In the next Mac Automation post, I will show you how to create a Mac OS X plug-in using Automator.