Many years ago I made a website and posted it here. It because a hit and I am proud of it. It's open source under a share-alike non-commercial license. Someone took it, bought the same domain with a different extension and slammed ads on it. This has been going on for many years and I never knew what to do, we are talking pennies and it's not something I would like to get in to legal stuff to fix. I don't have neither the time or money. But if someone knew a way I could at least have this person remove the ads it would be great. Thanks!
Edit: could I maybe complain to the domain hosting? I would go to the advertisers but really it's mostly just referral links bitcoin exchanges.
You might want to try to find out a bit more about how this issue has been discussed (and resolved?) within the CC community, for example because it's possible that the person who copied your site might feel that the copy is genuinely "noncommercial".
The DMCA takedown process is easy to use, and you don't need a lawyer to use it. However, it's only available if the site is hosted in the United States and the hosting provider has a DMCA agent (which typical hosting providers do). There's also no guarantee that the site will stay down or that you won't end up in court since, by design, the other party has the right to challenge the DMCA notice either by a counter-notice (asserting that the use of the copyrighted work is in fact legitimate) or by asking a court to resolve the dispute (an "action for declaratory judgment").
Also, by design, it's hard to force other people to do things without involving the legal system in some way. :-)