Web 2.0 has affected the music industry in several ways. It allows artists to promote themselves on social media sites like MySpace and YouTube to reach a large audience without spending money. It also lets people easily download and share music files, which has reduced CD sales. While file sharing has hurt sales, legal download services like iTunes have been successfully adopted as they are cheaper and more convenient for users while still providing some revenue to artists. The music industry must now adapt to digital music distribution online rather than trying to prevent file sharing through restrictions.