If you are looking for a tool to let you know what is being copied from your website or blog to some other website then you should try Tracer.
Tracer is a free online service where you need to sign up and then put a piece of code in your website’s body tag. That JavaScript code will trace your website for each and every copy event. Once you login with your ID and password, the dashboard will show you the total page views, images and text copied, words copied etc. It will look like as below,
This application is in beta mode and it really need some improvement but for some basic trace it is really useful. The concept is good and in near future the overall performance will also improve.