When to file Digital Millennium Copyright Act (DMCA) request and when to Report Spam?
Now if your duplicate content problem is an external person, someone who has scraped you, a spammer, there are two things you can do: 1. If they’re a legitimate company, do a Digital Millennium Copyright Act (DMCA) Request. Google would take those pages out of the index. 2. Now if they’re a true spammer, if it’s casinos-viagra-cialis-onlinegambling.-info.US.biz or whatever; and they’re really scraping you and there’s nothing good on there at all, do a Spam Report. We do love to get those, and when we pull on that thread we can sometimes find the entire spam network. In short, you normally don’t need to worry about duplicate content. If you are interested, you’re more than welcome to use the canonical link tag. It works very well. Take your time, but it’s just like a little 301, permanent redirect on your site. And if you see somebody scraping you or who is a spammer, either do a DMCA Request or do a Spam Report.