404design developed a WordPress plugin for bol.com to show off a new feature from the version 4 of the bol.com Open API, the sellerlist, an overview of all products that are sold though a specific seller (not bol.com, but a Plaza or Second hand seller). In this case the second hand seller.
If you want to contribute to this plugin, you can fork the work on https://github.com/derkmdt/seller-widget-bolcom and do a pull request so I can checkout the changes and accept them.
You can also install the plugin from WordPress plugin directory on http://wordpress.org/plugins/bolcom-seller-widget/.
