This is just my personal opinion, but if it is too good to be true, it usually is. I don't trust this get rich quick schemes or get rich easy ones. If they are so rich they wouldn't be wasting their time trying to show it to you.
That being said, I did look at the home page of the site and it is correct in saying a bad credit score will cost you. It is also true that close to 80% of credit reports have errors and 25% of those are severe enough to deny you credit.
Like the other poster said the best thing you can do is pay your bills on time. Another thing I would recommend would get a free copy of your credit report from www.annualcreditreport.com and make sure everything is reporting accurately. Then if needed do some Credit Restoration , either do it yourself or hire a company. Credit Repair can be the answer for some people, but more importantly get educated on your credit and pay your bills on time.
Good luck and I hope you can raise your score.