Well, I am not an expert on how to report that. I thought about creating a webpage for it. I am open to advice, I am just sick of seeing those everyday I browse youtube...
I also tried to comment on those videos, my comments were deleted...
Leaving them as comments doesn't report them to Youtube, and the video's creator (if they're perpetuating a scam) will delete them.
Use the Report feature. That goes to Youtube.
As I said, I reported to youtube, explaining in details the code was a scam etc...