We tell our friends about it and they buy it at 10% more than you paid for it just because you have the in.
Did they really need this in their lives?
Because Bitcoin is a p2p currency protocol, it was create with a purpose of allowing people to transfer value without middleman. While MLM schemes are created with a sole purpose of generating profit to people on the top. Bitcoin doesn't care if you are talking about it to your friends, it increases in price because investors all over the world see its potential, not because its users are luring newcomers to buy it.