How do I know whether there is duplicate content of my website somewhere else?

Question

I suspect there might be some duplicate content of some of my webpages somewhere else but I do not know how to check this one out. I would like to know how I can do it because my website is a writing services on essay papers and other types of academic research papers and for this reason having duplicate content somewhere else is fatal and not in line with our plagiarism policy.

Answer 1

Try this http://www.copyscape.com/ It will give you the results where similar content is present.

Answer 2

I'm using http://www.plagspotter.com/ and find it to be much better than CopyScape actually, there you can see all pages on the Web that are using same content as yours.