Service for finding duplicate content?

[CIEEwebTeam]

I know there are a lot of free tools to find duplicate content by entering in your URLs, but my site is very big and I am really hoping to find a service that will crawl the web and alert me of any duplicate content.

More importantly, I want to find other sites that are publishing my content which seems to be a bit more difficult than finding tools that check for duplicate content within one site.

Does anyone know if this exists??

Thanks!

Rachel

[matbennett]

Copyscape has an API you could probably feed that a list of your URLs and it report back close matches fairly easily.  I'm not aware of one that does it as an ongoing task though, which seems to be what you are asking for.

Mind you "Very big" + Regular could add up in price.