How many people use MP3?

There isn't an exact number, but before the ipods release,it might not have been that many, more people wanted the iPod than the humble Music player, a lot of people do have them, (like myself prefer the mp3 to the ipod) however more technical people who want the update stuff take the ipod- threat not though, because of the IPOD, MP3 are now very popular around the world to whoever can afford them, mind you Ipods are very much like MP3 if not infact the same so in this case one of the world most popular bits of tech, next to the TV