Open Yale Courses echoes Harvard Extension and Stanford Online, in that it offers only courses from Yale. While the site is similarly limited to topics taught at the school, Open Yale Courses offers a lot of videos of actual campus lectures. The availability of videos makes the site a great option if you’re looking for quality courses, but learn better by watching than by reading.
Often, what happens is that we run into unscrupulous Internet Marketers (IMs) who have less-than altruistic intentions of extracting money from you rather than helping you to make it. However, this isn't something new. People have been falling for networking marketing, pyramid schemes, and affiliate marketing scams since before the start of the net.