It is now time for some final words on the impact that file-sharing has had on the record business and the consumption of multimedia as a whole. It is no coincidence that MP3 players have become so prolific on the homes, streets, offices and schools of developed countries in recent years, in line with the advent of file-sharing and the MP3 format. While Napster was the first file-sharing peer-to-peer (P2P) program of its kind, there have been many more to follow suit; becoming increasingly more sophisticated in terms of user privacy and overall efficiency. There are other, more static file-sharing venues on the net; such as Youtube.com and Break.com: these websites rely on users to upload all featured content. The advent of Napster was thanks to Shawn Fanning, a Northeastern University student, who wanted a better way to download MP3s. The number of file-sharing users in existence is growing at an unprecedented annual rate. Many youth see the practice of sharing copyrighted material acceptable – though it is illegal. Regarding P2P programs, there are two main kinds; centralized and decentralized. Centralized is much more prone to legal attacks due to the locations of pirated copyright material being stored on servers owned by the P2P service provider. Decentralized networks do not suffer from this legal drawback. Any material available in digital format can be obtained through a P2P network. Legal issues have plagued P2P file-sharing; the RIAA has performed a battery of lawsuits since 2003, and continues to do so. Websites like Youtube.com monitor content uploaded by users as much as possible, and have agents that frequently delete unauthorized (copyright) material. The wild popularity of online file-sharing and the legal issues surrounding it have spawned legitimate distributors such as iTunes and Rhapsody. The sales of CD albums produced by record labels have fallen substantially over recent years; coinciding with the advent of the MP3 and online file-sharing.