Google had change their advertising policy and this had an adverse effect on how adsense would be operated. Many had cried fool about the death of adsense as the medium for advertising income. Hence, marketeer of google product now lingering on google adword. But the way they market the product some time misleading the buyer to think it's adsense. Some to extent can be consider a scam. This guide try to avoid that.
Adsense Scam (Read between the line)
I once bought an adsense product that claim with adsense, the revenue only touch around $5,000 per month but without adsense the revenue jump into $50,000 per month. While trying to be honest, at the first glimpse, there was no mentioned about adword, infact it is about adword. Even when you read through the ad, it would not even mentioned about adword. If you find these kind of ad, it's best to ask the seller, what are they selling. Contextual text ad is used not just Google but also by Yahoo and by the rest of online advertising company (e.g. Bidvertiser and AlternateUrl). If they reluctant to explain it to you, than don't buy.
Survey Scam (Fill Out Survey Online)
Another way marketeer market their product is by masking google adword as filling-up survey online. I bought this type of program and only to found out that it's actually Google Adword. It's normally cost between $35 to $45 one time fees. When you ask for a refund they simply ignored your request. Again, if you find these kind of ad, it's best to ask the seller, what are they selling. A survey that worth $25 per fill-up is very rare and to make $600 per month just filling-up survey is would close to impossible. So ask before your buy, if they reluctant to explain it to you, than don't buy.