nomis5 - 8:34 pm on Sep 20, 2013 (gmt 0)
Is this just one person or have you found several people doing it?
You haven't answered that question which is a crucial one. Also, do you know the identity of who is doing this?
If you don't then the first thing to do is to find out who is doing this. If you do then can you prove they are doing it? If yes then get your attorney to write to them asking them to desist.
You may also want to write to those who link to you warning them of the situation.
If you are certain of your facts (100% provable)) then put a small notice on your site to describe what is happening.