Agreed. Back in the first year of university I did some affiliate marketing (not in quite the same way but similar) and made around $10K or so with a lot of work.
It's possible to do it ethically, which is what I tried very hard to do (at the end of the day it's just advertising and a lot of it depends on the product). But it becomes incredibly difficult to pick products that aren't essentially rip offs. The affiliate networks are as much trying to scam the marketers (which is why his advice of picking only the bigger networks is good).
I used to market stuff similar to what JML sell (i.e. fairly niche "time save" appliances). Most of the products were good - but ultimately the kind of thing you buy on a whim and then use once or twice a year.
The margins aren't great for the time input [nearly failed my first year outright] so I moved on to other pastures (where ethics were more prevalent too)
It's possible to do it ethically, which is what I tried very hard to do (at the end of the day it's just advertising and a lot of it depends on the product). But it becomes incredibly difficult to pick products that aren't essentially rip offs. The affiliate networks are as much trying to scam the marketers (which is why his advice of picking only the bigger networks is good).
I used to market stuff similar to what JML sell (i.e. fairly niche "time save" appliances). Most of the products were good - but ultimately the kind of thing you buy on a whim and then use once or twice a year.
The margins aren't great for the time input [nearly failed my first year outright] so I moved on to other pastures (where ethics were more prevalent too)