Those with ads (like 4shared and megaupload) get money from annoyingly trying to get you to subscribe to get pirated content. Yes, megavideo, I am looking at y

Those with ads (like 4shared and megaupload) get money from annoyingly trying to get you to subscribe to get pirated content. Yes, megavideo, I am looking at your 72-minutes limit. About those without ads, probably their business model is to trying to get you to subscribe, by being less annoying than those without ads.