Vemma builder is scam?

I think most of us will see an ads about vemma builder..
Most of advertiser such as adsense, bidvertiser ads this website..
Is it worthy to join?? I don't know..
Their quote is hype ..

" You could be making $2,000 to $5,000 of extra income every month"

Maybe some of you help me to know whether is it scam or really best way to earn more money


Look the explanation at youtube..