Is vector marketing a scam?

Is vector marketing a scam?
Okay so, I recently just got interviewed, passed the prescreening, and then the manager told us 1 by 1 whether or not we got the job, and so he said I got the job. This would have been my first job, and so I was psyched about working here. But when I went home and did some research I found a lot of negative comments about Vector Marketing being a scam, so could anyone elaborate or tell me if this is a scam?
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