It's great that this is being circulated, but I would have been rather happier if you'd checked with me first before republishing this. Given the choice, I would have preferred that you just linked to the original article, as I do not want this to end up coming above my personal homepage on google. (The least you could do is to link to my personal homepage, and to the original article there.) I'm also a bit irked that it's being published with someone else's bitcoin address at the bottom. Perhaps it's naive to expect any control over content once it's online though.
You are perfectly within your rights. That's plagiarism, plain and simple. It would be best for everyone if the owner of the site removes your content immediately. Otherwise, you may have to file a DCMA complaint with the web host.