I'm really glad this extension exists. However, if it is built in to the general results, could you also add a metric to Webmaster Tools showing the frequency

I'm really glad this extension exists. However, if it is built in to the general results, could you also add a metric to Webmaster Tools showing the frequency with which your domain is reported. It would also be good if the blocking could have timeout period so that sites can be given a chance to improve their behavior, rather than just deleting that domain forever.