A bit of freeware to help you tag documents for easier finding afterwards.
To tag a file – just drag it onto the Tagit application in the dock. You can also assign ratings. Tagit lets you drag multiple documents to it at once. With multiple documents, Tagit will add tags to all the documents, leaving individual tags on specific documents alone. Which is just what you expect and need. Your most recently set tags are easily added with a single click.