Is YouTube and MySpace the future of marketing? Maybe, but right now both of these sites don't carry the clout to get shoppers to dig in their wallets and spend cash. New research out from iProspect and JupiterResearch found that both MySpace and YouTube only got two percent of online users to buy something in the past year. Amazon was the only website that swayed a high percentage of consumers. It got 28 percent of online users to buy stuff.