What would you do... someone is stealing my content and is now using my referral traffic sources

Over the last month me and several other bloggers in my niche have discovered that someone from Romania (we're americans) has set up several blogs that are comprised completely of articles that have been scraped from us.

The content is being copy/pasted in its entirety

The owner is active on facebook with pages for each page and regularly posts in several facebook groups under various handles.

The poster is now going into facebook groups that i already post my (original content) links and either re-posting them or posting them in groups before I can.

The thing is...he is including a VERY tiny "Source" link on his site that does go back to the source of the article. (this wouldnt be a question if he didnt) However that link is virtually non-existent and buried in between a mountain of clickbank ads. He gives absolutely no real credit to the author and has refused to respond to numerous communications sent by myself and others.

From my research I believe that copy/pasting an article word for word in its entirety does still violate American copyright law.

This guy cannot be allowed to take content and more importantly, referral traffic sources and so I need to escalate this issue sine he refuses to communicate.

First I plan to contact his hosting provider and providing a DCMA complaint on behalf of myself and the others he is plagiarizing from.

If no action is taken I dont know what to do...he's in Romania, its not like I can serve him a summons.

Push comes to shove Im considering paying for some "negative" SEO and possibly seeing what options I cold explore to "encourage" facebook to spamblock his sites.

Id really hate this to get nasty but its gone past the point of being annoying and now has gotten to the point where he's taking measurable traffic and money directly out of my pocket. My site gets well over 20K unv's a month and im on the lower end of traffic scale compared to some of the other people he's ripping off....so it's not some piddly issue of a couple visitors we're talking about.

Any suggestions?