Another huge point when it comes to affiliate marketing is that you get to choose your product.
Often with MLM, there is a limited number of companies out there, and when you get started you don't really know if you like their products in the first place.
With Affiliate marketing, you can look at what products you are already using, and tell people about those. It's much easier, and I find that my conscience doesn't object.
For example, I tell
everybody about
Audible, whether through an affiliate link or not (that one isn't). It's a book-on-mp3 site by the way.