I just created a new Wordpress site on a development server. Of course the site on the development URL was "robots discouraged" in Wordpress while it was under construction. Then the site was transferred to the live URL, a couple of weeks ago. I just discovered that since that time the development URL has still been live on air, with both sites not robots discouraged. IE total duplicate content on both sites being indexed. I've now pulled the plug on the dev server ... but how bad is that? Will google forget about the dev server pages as soon as they disappear? ... I sure hope so.