How low can a blogger get to promote scam?

Sometimes I notice that bloggers advertise miscellaneous programs that are obvious scam (like, “pay only 500$ to start earning 5,000$ every month”… we all know this popular now-a-days new network). I sometimes see one blogger after another blogging about such programs without any affiliate links and then I notice that some of the pay-to-blog networks have these sites as campaigns, for a terribly low price, like 5$. The question is, do all the bloggers who take this opportunity don’t realize it’s an obvious scam, they don’t care what to write about, as long as they get paid, or — they need the 5$ so much they wouldn’t mind someone to lose their fairly earnt 500$ for it. How and why bloggers don’t realize that once you post a positive review about ‘product X’, saying how great it worked for you when in reality you never even signed up for it, and, when the post is not disclosed as sponsored — someone can easily get scr*wed up! I can understand the desire to squeeze maximum revenue off your blog, but at least make it obvious for the readers that you got paid for it, so vast majority of readers won’t get hooked on a cheap trick to sign up.

Today I had seen on one of the blogs I read daily, a post that advertises some “cash making” program. It’s perfect, it really is, if we count out the small 99$ sign up fee. But, it doesn’t matter as you will be making heaps of dollars right after it… Reading this, made me really angry, especially since I know the blogger got paid exactly 5$ to post it, and if I’d not have known it was sponsored since I saw it in campaigns panel, I could have believe it, and I wonder how many people did already… That’s sad.