The FlatAds is a Premium Directory/Listing WordPress theme, super flexible and has a fully responsive design (try resizing your browser). Built with HTML5 and CSS3 . A lot of thought and care were put into FlatAds making it a pleasure to use. The FlatAds comes compatible with woocommerce 2.1, bbpress, MailChimp for WP plugin.
Demo: http://themeforest.net/item/flatads-classified-adswordpress-theme/7157644