Often I need to link the description as well as the image. This is a bit of toughie with the plugin as is (which I love and use frequently). But a small addition could make it easier for others. In /views/widget.php, if line 43 is changed from
$text = apply_filters( 'widget_text', $description );
$text = apply_filters( 'widget_text', $description, $instance );
then the filter has the ability to pass the link info, if necessary to the user.
Thanks again for the great plugin.