My question: Is there a plugin, script or whatever which allows me to manage more than one blog? For example if wordpress releases an update the script or plugin should implement this update to all blogs. And a second usefull function would be to copy existing blogs with all plugins etc. So my idea is to create one blog as mainblog with all plugins etc and then I dublicate this blog some times. Then I can concentrate on modifying the template, keywords, rss-feeds etc.