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2) Do nothing, because I have a link to me
You'd also have to evaluate the scraper site to see if their link to you would be worth anything. Chances are that it's not.
If the link isn't likely to help you, then I'd make efforts to get the article taken down.
Aristotle, my problem is that my website is not at the top positions and I do not know why. My content is excellent (the fact that many pages are copied proof it). I do not use black hat techniques, so I am investigating and I noticed that many pages of mine are copied. If I type a string I come first and the copies after, but I do not know if all that duplicate content can hurt me. You say no. Are you really really sure?
I build back links to the page to increase the link juice that they pass to me!