Networking, as it used to be called, is a pretty thankless task. The conventional approach to networking was to start with the network of friends and colleagues that you already have; friends and family, your existing clients, your contacts at the squash club and so on. Most people feel uncomfortable pitching to friends and family, unless you have an unbeatable idea or concept, but if that was the case, then lead generation would not be a problem
Multi-level marketing is a legitimate business strategy, though it is controversial. One problem is pyramid schemes, which use money from new recruits to pay the people at the top, often take advantage of people by pretending to be engaged in legitimate multi-level marketing. You can spot pyramid schemes by their greater focus on recruitment than on product sales.