Yep when you create the web contact there is an option to have the thumbnails caption as the rating state. This is half way there to being useful, ie great that you can preserve the rating state not so great because it doesn't preserve the file name. You can hack around with the Default.xsl (well its possible not sure if its legal) that is embedded in the application. Once you find that file you can easily add some customization. For instance you could add {preview-filename}_tagged_{caption} to the preview-path href so that when the thumbnail is clicked both the filename and tagged state is displayed in the preview window.