And then it comes to the money-back guarantees! Many of them are completely unsubstantiated, i.e. how real and credible are these guarantees? Forget the "personal" guarantees right away! In many cases, if you read the fine print, the so-called "risk-free" money-back guarantee is actually conditional. Just read the Refund Policy, if there is one. If not, another reason to stay away!
I have always maintained that if in fact any given scheme is so great, then why not franchise it for free and participate in a revenue-sharing model? I am certain such a model would certainly bring greater "riches" to the creators than just a one-time payment, apart from the up-sells in many cases.
There are so many schemes out there, that it is basically impossible to warn everyone of all of them. Not to mention that there new schemes coming out virtually every day! I try my level best to cover as many as I possibly can, but in view of the sheer scale, I concentrate on those which are what I call "the worst of the worst" and those where I know from lead, that it can safely be assumed to be a Scam of some sort or another. Feel free to check it out at www.scamhunter.weebly.com and if you're interested to set up your own Internet business, then go to www.internetadvisor.weebly.com where you can find not only many resources and suggestions, but many of them are free!