While many of the tools and resources I use online are considered "MLM", I only have one true MLM that I consider my "Primary MLM".  Everything else is generating leads and paying me to do so.  It's rather brilliant ;-)  There is no secret to building a successful MLM, you have to focus on it and become very involved - become a product of the product and stay the course.   As I use the Internet, building an MLM takes on a whole new challenge and I quite love it!