you have a very valid point! I thought the same thing myself! thats why now you are seeing videos on youtube of folks cashing out not all but some of the interest I call it proofing out the system, also there are many who are actually doing the 120 days loan or the 179 days loan. which if I was doing I would cash out mid way through, the 120 days = 4 months I would cash out in 2 months and the 179 days = 6 months I would cash out in 3. you always have the option of going in again with that same amount or more. Also the "compound interest" is valid basically what happening with that is all those loans interest added up, and I hear you they are extending the thing for a longer window even the folks that reinvesting the large 4 months loans they are pushing it out to 5 months etc. but keep in mind that first loan is coming due as well. but it is what you say its not treated as one big loan when you reinvest they are seeing the interest total and thinking that it is.