A music video is a short film or video that accompanies a complete piece of music, most commonly a song. Modern music videos are primarily made and used as a marketing device intended to promote the sale of music recordings. Although the origins of music videos go back much further, they came into their own in the 1980s, when MTV (Music Television)'s format was based around them. The earliest purveyors of music videos on the internet were members of IRC-based groups who took the time to record music videos as they appeared on television, then digitising them and exchanging the .mpg files via IRC channels. As broadband Internet access has become available more widely, various initiatives have been made to capitalise on the continued interest in music videos. MTV itself now provides streams of artists' music videos, while AOL's recently launched AOL Music features a vast collection of advertising supported downloadable videos. The internet has become the primary growth income market for Record Company produced music videos. At its launch, Apple's iTunes Music Store provided a section of free music videos in high quality compression to be watched via the iTunes application. More recently the iTunes Music Store has begun selling music videos for use on Apple's recently introduced iPod with video playback capability.Another new phenomenon, deriving from the popularity of blogging, is the use of so-called music video "codes", lines of HTML code including links to music videos that the individual can simply copy and paste into their blog in order to feature a given video streaming on it. YouTube, Google Video, IFilm and MySpace have become primary venues for viewing videos. YouTube is claiming up to six million viral video streams a day.